23231402 has 4 divisors (see below), whose sum is σ = 34847106. Its totient is φ = 11615700.

The previous prime is 23231399. The next prime is 23231473. The reversal of 23231402 is 20413232.

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., 13315201 + 9916201 = 3649^2 + 3149^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5807849 + ... + 5807852.

Almost surely, 2^23231402 is an apocalyptic number.

23231402 is a deficient number, since it is larger than the sum of its proper divisors (11615704).

23231402 is a wasteful number, since it uses less digits than its factorization.

23231402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11615703.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 23231402 is about 4819.8964719172. The cubic root of 23231402 is about 285.3372513194.

Adding to 23231402 its reverse (20413232), we get a palindrome (43644634).

The spelling of 23231402 in words is "twenty-three million, two hundred thirty-one thousand, four hundred two".