31372379 has 4 divisors (see below), whose sum is σ = 31402176. Its totient is φ = 31342584.

The previous prime is 31372373. The next prime is 31372387. The reversal of 31372379 is 97327313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31372379 - 2¹² = 31368283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31372373) 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, 13259 + ... + 15444.

It is an arithmetic number, because the mean of its divisors is an integer number (7850544).

Almost surely, 2^31372379 is an apocalyptic number.

31372379 is a deficient number, since it is larger than the sum of its proper divisors (29797).

31372379 is a wasteful number, since it uses less digits than its factorization.

31372379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29796.

The product of its digits is 23814, while the sum is 35.

The square root of 31372379 is about 5601.1051588057. The cubic root of 31372379 is about 315.3908945851.

The spelling of 31372379 in words is "thirty-one million, three hundred seventy-two thousand, three hundred seventy-nine".