255115333431 has 64 divisors (see below), whose sum is σ = 436590182400. Its totient is φ = 144217801728.

The previous prime is 255115333411. The next prime is 255115333463. The reversal of 255115333431 is 134333511552.

255115333431 is a `hidden beast` number, since 2 + 55 + 11 + 533 + 34 + 31 = 666.

It is not a de Polignac number, because 255115333431 - 2⁶ = 255115333367 is a prime.

It is a super-2 number, since 2×255115333431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255115333411) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8458005 + ... + 8488113.

It is an arithmetic number, because the mean of its divisors is an integer number (6821721600).

Almost surely, 2^255115333431 is an apocalyptic number.

255115333431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

255115333431 is a deficient number, since it is larger than the sum of its proper divisors (181474848969).

255115333431 is a wasteful number, since it uses less digits than its factorization.

255115333431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30605 (or 30599 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

Adding to 255115333431 its reverse (134333511552), we get a palindrome (389448844983).

The spelling of 255115333431 in words is "two hundred fifty-five billion, one hundred fifteen million, three hundred thirty-three thousand, four hundred thirty-one".