23031134402 has 4 divisors (see below), whose sum is σ = 34546701606. Its totient is φ = 11515567200.

The previous prime is 23031134377. The next prime is 23031134407. The reversal of 23031134402 is 20443113032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19867184401 + 3163950001 = 140951^2 + 56249^2 .

It is not an unprimeable number, because it can be changed into a prime (23031134407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5757783599 + ... + 5757783602.

Almost surely, 2^23031134402 is an apocalyptic number.

23031134402 is a deficient number, since it is larger than the sum of its proper divisors (11515567204).

23031134402 is a wasteful number, since it uses less digits than its factorization.

23031134402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11515567203.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 23031134402 its reverse (20443113032), we get a palindrome (43474247434).

The spelling of 23031134402 in words is "twenty-three billion, thirty-one million, one hundred thirty-four thousand, four hundred two".