23031401232 has 160 divisors (see below), whose sum is σ = 68764106752. Its totient is φ = 6506583552.

The previous prime is 23031401207. The next prime is 23031401303. The reversal of 23031401232 is 23210413032.

It is a super-2 number, since 2×23031401232² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 23031401199 and 23031401208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15915933 + ... + 15917379.

Almost surely, 2^23031401232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23031401232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34382053376).

23031401232 is an abundant number, since it is smaller than the sum of its proper divisors (45732705520).

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

23031401232 is a wasteful number, since it uses less digits than its factorization.

23031401232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1959 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23031401232 its reverse (23210413032), we get a palindrome (46241814264).

The spelling of 23031401232 in words is "twenty-three billion, thirty-one million, four hundred one thousand, two hundred thirty-two".