3131111402 has 8 divisors (see below), whose sum is σ = 4766766816. Its totient is φ = 1542189132.

The previous prime is 3131111351. The next prime is 3131111407. The reversal of 3131111402 is 2041111313.

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

It is a super-2 number, since 2×3131111402² = 19607717223468811208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3131111407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11683118 + ... + 11683385.

It is an arithmetic number, because the mean of its divisors is an integer number (595845852).

Almost surely, 2^3131111402 is an apocalyptic number.

3131111402 is a deficient number, since it is larger than the sum of its proper divisors (1635655414).

3131111402 is a wasteful number, since it uses less digits than its factorization.

3131111402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23366572.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 3131111402 is about 55956.3347798978. The cubic root of 3131111402 is about 1462.9613070502.

Adding to 3131111402 its reverse (2041111313), we get a palindrome (5172222715).

The spelling of 3131111402 in words is "three billion, one hundred thirty-one million, one hundred eleven thousand, four hundred two".