31496213 has 8 divisors (see below), whose sum is σ = 36968832. Its totient is φ = 26266896.

The previous prime is 31496209. The next prime is 31496219. The reversal of 31496213 is 31269413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31496213 - 2² = 31496209 is a prime.

It is a super-2 number, since 2×31496213² = 1984022866682738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31496219) 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, 60545 + ... + 61062.

It is an arithmetic number, because the mean of its divisors is an integer number (4621104).

Almost surely, 2^31496213 is an apocalyptic number.

It is an amenable number.

31496213 is a deficient number, since it is larger than the sum of its proper divisors (5472619).

31496213 is a wasteful number, since it uses less digits than its factorization.

31496213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121651.

The product of its digits is 3888, while the sum is 29.

The square root of 31496213 is about 5612.1486972460. The cubic root of 31496213 is about 315.8053232625.

The spelling of 31496213 in words is "thirty-one million, four hundred ninety-six thousand, two hundred thirteen".