231545401320032 has 48 divisors (see below), whose sum is σ = 458988057864000. Its totient is φ = 114977743515648.

The previous prime is 231545401320001. The next prime is 231545401320059. The reversal of 231545401320032 is 230023104545132.

It is a super-2 number, since 2×231545401320032² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231545401319974 and 231545401320001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484753 + ... + 21570704.

It is an arithmetic number, because the mean of its divisors is an integer number (9562251205500).

Almost surely, 2^{231545401320032} is an apocalyptic number.

It is an amenable number.

231545401320032 is a deficient number, since it is larger than the sum of its proper divisors (227442656543968).

231545401320032 is a wasteful number, since it uses less digits than its factorization.

231545401320032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23057623 (or 23057615 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 231545401320032 its reverse (230023104545132), we get a palindrome (461568505865164).

The spelling of 231545401320032 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred one million, three hundred twenty thousand, thirty-two".