31579379 has 4 divisors (see below), whose sum is σ = 34008576. Its totient is φ = 29150184.

The previous prime is 31579357. The next prime is 31579393. The reversal of 31579379 is 97397513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97397513 = 2221 ⋅43853.

It is a cyclic number.

It is not a de Polignac number, because 31579379 - 2¹⁶ = 31513843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31579399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214579 + ... + 1214604.

It is an arithmetic number, because the mean of its divisors is an integer number (8502144).

Almost surely, 2^31579379 is an apocalyptic number.

31579379 is a deficient number, since it is larger than the sum of its proper divisors (2429197).

31579379 is a wasteful number, since it uses less digits than its factorization.

31579379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429196.

The product of its digits is 178605, while the sum is 44.

The square root of 31579379 is about 5619.5532740601. The cubic root of 31579379 is about 316.0830411198.

The spelling of 31579379 in words is "thirty-one million, five hundred seventy-nine thousand, three hundred seventy-nine".