31382099 has 8 divisors (see below), whose sum is σ = 36597600. Its totient is φ = 26898648.

The previous prime is 31382093. The next prime is 31382107. The reversal of 31382099 is 99028313.

It is not a de Polignac number, because 31382099 - 2⁴ = 31382083 is a prime.

It is a super-2 number, since 2×31382099² = 1969672275291602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31382093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45404 + ... + 46089.

It is an arithmetic number, because the mean of its divisors is an integer number (4574700).

Almost surely, 2^31382099 is an apocalyptic number.

31382099 is a deficient number, since it is larger than the sum of its proper divisors (5215501).

31382099 is an frugal number, since it uses more digits than its factorization.

31382099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91514 (or 91500 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 31382099 is about 5601.9727775133. The cubic root of 31382099 is about 315.4234633929.

The spelling of 31382099 in words is "thirty-one million, three hundred eighty-two thousand, ninety-nine".