23311231240 has 64 divisors (see below), whose sum is σ = 59191560000. Its totient is φ = 8184503040.

The previous prime is 23311231217. The next prime is 23311231289. The reversal of 23311231240 is 4213211332.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900690 + ... + 926209.

It is an arithmetic number, because the mean of its divisors is an integer number (924868125).

Almost surely, 2^23311231240 is an apocalyptic number.

23311231240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311231240 is an abundant number, since it is smaller than the sum of its proper divisors (35880328760).

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

23311231240 is a wasteful number, since it uses less digits than its factorization.

23311231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826950 (or 1826946 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 23311231240 its reverse (4213211332), we get a palindrome (27524442572).

The spelling of 23311231240 in words is "twenty-three billion, three hundred eleven million, two hundred thirty-one thousand, two hundred forty".