31373116 has 18 divisors (see below), whose sum is σ = 56786912. Its totient is φ = 15150360.

The previous prime is 31373113. The next prime is 31373117. The reversal of 31373116 is 61137313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31373113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62121 + ... + 62623.

Almost surely, 2^31373116 is an apocalyptic number.

It is an amenable number.

31373116 is a deficient number, since it is larger than the sum of its proper divisors (25413796).

31373116 is an equidigital number, since it uses as much as digits as its factorization.

31373116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 536 counting only the distinct ones).

The product of its digits is 1134, while the sum is 25.

The square root of 31373116 is about 5601.1709490070. The cubic root of 31373116 is about 315.3933642870.

It can be divided in two parts, 313731 and 16, that multiplied together give a triangular number (5019696 = T₃₁₆₈).

The spelling of 31373116 in words is "thirty-one million, three hundred seventy-three thousand, one hundred sixteen".