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992054231 = 7141722033
BaseRepresentation
bin111011001000011…
…000101111010111
32120010201120120022
4323020120233113
54012431213411
6242235055355
733404215250
oct7310305727
92503646508
10992054231
11469a97033
122382a155b
1312a6b764c
1495a7db27
155c161edb
hex3b218bd7

992054231 has 4 divisors (see below), whose sum is σ = 1133776272. Its totient is φ = 850332192.

The previous prime is 992054209. The next prime is 992054251. The reversal of 992054231 is 132450299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132450299 = 971365467.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-992054231 is a prime.

It is a super-2 number, since 2×9920542312 = 1968343194490002722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 992054191 and 992054200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992054251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70861010 + ... + 70861023.

It is an arithmetic number, because the mean of its divisors is an integer number (283444068).

Almost surely, 2992054231 is an apocalyptic number.

992054231 is a deficient number, since it is larger than the sum of its proper divisors (141722041).

992054231 is a wasteful number, since it uses less digits than its factorization.

992054231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141722040.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 992054231 is about 31496.8924022672. The cubic root of 992054231 is about 997.3443641746.

The spelling of 992054231 in words is "nine hundred ninety-two million, fifty-four thousand, two hundred thirty-one".

Divisors: 1 7 141722033 992054231