23311031004 has 36 divisors (see below), whose sum is σ = 59277966384. Its totient is φ = 7723812672.

The previous prime is 23311030903. The next prime is 23311031017. The reversal of 23311031004 is 40013011332.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1932697 + ... + 1944720.

Almost surely, 2^23311031004 is an apocalyptic number.

It is an amenable number.

23311031004 is an abundant number, since it is smaller than the sum of its proper divisors (35966935380).

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

23311031004 is a wasteful number, since it uses less digits than its factorization.

23311031004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877594 (or 3877589 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23311031004 its reverse (40013011332), we get a palindrome (63324042336).

The spelling of 23311031004 in words is "twenty-three billion, three hundred eleven million, thirty-one thousand, four".