3131402 has 8 divisors (see below), whose sum is σ = 4756800. Its totient is φ = 1545804.

The previous prime is 3131377. The next prime is 3131419. The reversal of 3131402 is 2041313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9752 + ... + 10067.

It is an arithmetic number, because the mean of its divisors is an integer number (594600).

Almost surely, 2^3131402 is an apocalyptic number.

3131402 is a deficient number, since it is larger than the sum of its proper divisors (1625398).

3131402 is a wasteful number, since it uses less digits than its factorization.

3131402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19900.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3131402 is about 1769.5767855620. The cubic root of 3131402 is about 146.3006564726.

Adding to 3131402 its reverse (2041313), we get a palindrome (5172715).

The spelling of 3131402 in words is "three million, one hundred thirty-one thousand, four hundred two".