231405425453136 has 80 divisors (see below), whose sum is σ = 652144574093760. Its totient is φ = 70122639912960.

The previous prime is 231405425453131. The next prime is 231405425453141. The reversal of 231405425453136 is 631354524504132.

It is an interprime number because it is at equal distance from previous prime (231405425453131) and next prime (231405425453141).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231405425453131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284530720 + ... + 285342848.

It is an arithmetic number, because the mean of its divisors is an integer number (8151807176172).

Almost surely, 2^{231405425453136} is an apocalyptic number.

It is an amenable number.

231405425453136 is an abundant number, since it is smaller than the sum of its proper divisors (420739148640624).

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

231405425453136 is a wasteful number, since it uses less digits than its factorization.

231405425453136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351804 (or 1351798 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 48.

Adding to 231405425453136 its reverse (631354524504132), we get a palindrome (862759949957268).

The spelling of 231405425453136 in words is "two hundred thirty-one trillion, four hundred five billion, four hundred twenty-five million, four hundred fifty-three thousand, one hundred thirty-six".