231540502111425 has 288 divisors, whose sum is σ = 472116116384640. Its totient is φ = 111805380864000.

The previous prime is 231540502111423. The next prime is 231540502111427. The reversal of 231540502111425 is 524111205045132.

231540502111425 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 4 + 0 + 502 + 1 + 1 + 142 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (231540502111423) and next prime (231540502111427).

It is not a de Polignac number, because 231540502111425 - 2¹ = 231540502111423 is a prime.

It is a super-2 number, since 2×231540502111425² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231540502111425.

It is not an unprimeable number, because it can be changed into a prime (231540502111423) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 853347181 + ... + 853618469.

It is an arithmetic number, because the mean of its divisors is an integer number (1639292070780).

Almost surely, 2^{231540502111425} is an apocalyptic number.

231540502111425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231540502111425 is an abundant number, since it is smaller than the sum of its proper divisors (240575614273215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231540502111425 is a wasteful number, since it uses less digits than its factorization.

231540502111425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271535 (or 271518 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 231540502111425 its reverse (524111205045132), we get a palindrome (755651707156557).

The spelling of 231540502111425 in words is "two hundred thirty-one trillion, five hundred forty billion, five hundred two million, one hundred eleven thousand, four hundred twenty-five".