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54312031 = 311752001
BaseRepresentation
bin1100111100101…
…1110001011111
310210012100002201
43033023301133
5102400441111
65220032331
71226434054
oct317136137
9123170081
1054312031
1128726484
12162326a7
13b337cc7
1472db02b
154b7c6c1
hex33cbc5f

54312031 has 4 divisors (see below), whose sum is σ = 56064064. Its totient is φ = 52560000.

The previous prime is 54312029. The next prime is 54312061. The reversal of 54312031 is 13021345.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13021345 = 52604269.

It is a cyclic number.

It is not a de Polignac number, because 54312031 - 21 = 54312029 is a prime.

It is a super-2 number, since 2×543120312 = 5899593422689922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54312061) 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, 875970 + ... + 876031.

It is an arithmetic number, because the mean of its divisors is an integer number (14016016).

Almost surely, 254312031 is an apocalyptic number.

54312031 is a deficient number, since it is larger than the sum of its proper divisors (1752033).

54312031 is a wasteful number, since it uses less digits than its factorization.

54312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752032.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 54312031 is about 7369.6696669525. The cubic root of 54312031 is about 378.7029439011.

Adding to 54312031 its reverse (13021345), we get a palindrome (67333376).

The spelling of 54312031 in words is "fifty-four million, three hundred twelve thousand, thirty-one".

Divisors: 1 31 1752001 54312031