31494859 has 4 divisors (see below), whose sum is σ = 34358040. Its totient is φ = 28631680.

The previous prime is 31494817. The next prime is 31494887. The reversal of 31494859 is 95849413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95849413 = 11 ⋅8713583.

It is not a de Polignac number, because 31494859 - 2⁹ = 31494347 is a prime.

It is a super-2 number, since 2×31494859² = 1983852286859762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31494809) 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, 1431574 + ... + 1431595.

It is an arithmetic number, because the mean of its divisors is an integer number (8589510).

Almost surely, 2^31494859 is an apocalyptic number.

31494859 is a deficient number, since it is larger than the sum of its proper divisors (2863181).

31494859 is a wasteful number, since it uses less digits than its factorization.

31494859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863180.

The product of its digits is 155520, while the sum is 43.

The square root of 31494859 is about 5612.0280647908. The cubic root of 31494859 is about 315.8007977815.

It can be divided in two parts, 3149 and 4859, that added together give a palindrome (8008).

The spelling of 31494859 in words is "thirty-one million, four hundred ninety-four thousand, eight hundred fifty-nine".