31442456 has 8 divisors (see below), whose sum is σ = 58954620. Its totient is φ = 15721224.

The previous prime is 31442441. The next prime is 31442479. The reversal of 31442456 is 65424413.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1965146 + ... + 1965161.

Almost surely, 2^31442456 is an apocalyptic number.

It is an amenable number.

31442456 is a deficient number, since it is larger than the sum of its proper divisors (27512164).

31442456 is a wasteful number, since it uses less digits than its factorization.

31442456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930313 (or 3930309 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 31442456 is about 5607.3573098207. The cubic root of 31442456 is about 315.6255512326.

Adding to 31442456 its reverse (65424413), we get a palindrome (96866869).

The spelling of 31442456 in words is "thirty-one million, four hundred forty-two thousand, four hundred fifty-six".