31496379 has 4 divisors (see below), whose sum is σ = 41995176. Its totient is φ = 20997584.

The previous prime is 31496371. The next prime is 31496389. The reversal of 31496379 is 97369413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97369413 = 3 ⋅32456471.

It is a cyclic number.

It is not a de Polignac number, because 31496379 - 2³ = 31496371 is a prime.

It is a super-2 number, since 2×31496379² = 1984043780223282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31496379.

It is not an unprimeable number, because it can be changed into a prime (31496371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5249394 + ... + 5249399.

It is an arithmetic number, because the mean of its divisors is an integer number (10498794).

Almost surely, 2^31496379 is an apocalyptic number.

31496379 is a deficient number, since it is larger than the sum of its proper divisors (10498797).

31496379 is a wasteful number, since it uses less digits than its factorization.

31496379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10498796.

The product of its digits is 122472, while the sum is 42.

The square root of 31496379 is about 5612.1634865709. The cubic root of 31496379 is about 315.8058780762.

The spelling of 31496379 in words is "thirty-one million, four hundred ninety-six thousand, three hundred seventy-nine".