31402412 has 6 divisors (see below), whose sum is σ = 54954228. Its totient is φ = 15701204.

The previous prime is 31402409. The next prime is 31402471. The reversal of 31402412 is 21420413.

It is a super-2 number, since 2×31402412² = 1972222958835488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3925298 + ... + 3925305.

It is an arithmetic number, because the mean of its divisors is an integer number (9159038).

Almost surely, 2^31402412 is an apocalyptic number.

It is an amenable number.

31402412 is a deficient number, since it is larger than the sum of its proper divisors (23551816).

31402412 is a wasteful number, since it uses less digits than its factorization.

31402412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850607 (or 7850605 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31402412 is about 5603.7855062449. The cubic root of 31402412 is about 315.4915044641.

Adding to 31402412 its reverse (21420413), we get a palindrome (52822825).

The spelling of 31402412 in words is "thirty-one million, four hundred two thousand, four hundred twelve".