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148413431 = 186779493
BaseRepresentation
bin10001101100010…
…01101111110111
3101100021011221202
420312021233313
5300443212211
622421003115
73451331135
oct1066115767
9340234852
10148413431
1176859231
124185349b
13249949ca
14159d4755
15d06953b
hex8d89bf7

148413431 has 4 divisors (see below), whose sum is σ = 148494792. Its totient is φ = 148332072.

The previous prime is 148413403. The next prime is 148413443. The reversal of 148413431 is 134314841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134314841 = 177900873.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-148413431 is a prime.

It is a super-2 number, since 2×1484134312 = 44053093002383522, 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 = 148413394 and 148413403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148415431) 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, 37880 + ... + 41613.

It is an arithmetic number, because the mean of its divisors is an integer number (37123698).

Almost surely, 2148413431 is an apocalyptic number.

148413431 is a deficient number, since it is larger than the sum of its proper divisors (81361).

148413431 is an equidigital number, since it uses as much as digits as its factorization.

148413431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81360.

The product of its digits is 4608, while the sum is 29.

The square root of 148413431 is about 12182.5051200482. The cubic root of 148413431 is about 529.4493283690.

The spelling of 148413431 in words is "one hundred forty-eight million, four hundred thirteen thousand, four hundred thirty-one".

Divisors: 1 1867 79493 148413431