31379949 has 12 divisors (see below), whose sum is σ = 45375616. Its totient is φ = 20897352.

The previous prime is 31379947. The next prime is 31379969. The reversal of 31379949 is 94997313.

It is not a de Polignac number, because 31379949 - 2¹ = 31379947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31379947) 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 11 ways as a sum of consecutive naturals, for example, 13572 + ... + 15714.

Almost surely, 2^31379949 is an apocalyptic number.

It is an amenable number.

31379949 is a deficient number, since it is larger than the sum of its proper divisors (13995667).

31379949 is a wasteful number, since it uses less digits than its factorization.

31379949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776 (or 3773 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 31379949 is about 5601.7808775424. The cubic root of 31379949 is about 315.4162599664.

The spelling of 31379949 in words is "thirty-one million, three hundred seventy-nine thousand, nine hundred forty-nine".