31202113 has 8 divisors (see below), whose sum is σ = 31554432. Its totient is φ = 30852096.

The previous prime is 31202081. The next prime is 31202131. The reversal of 31202113 is 31120213.

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 31202113 - 2⁵ = 31202081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31202093 and 31202102.

It is not an unprimeable number, because it can be changed into a prime (31202153) 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, 42556 + ... + 43282.

It is an arithmetic number, because the mean of its divisors is an integer number (3944304).

Almost surely, 2^31202113 is an apocalyptic number.

It is an amenable number.

31202113 is a deficient number, since it is larger than the sum of its proper divisors (352319).

31202113 is a wasteful number, since it uses less digits than its factorization.

31202113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 31202113 is about 5585.8851581464. The cubic root of 31202113 is about 314.8192899836.

Adding to 31202113 its reverse (31120213), we get a palindrome (62322326).

The spelling of 31202113 in words is "thirty-one million, two hundred two thousand, one hundred thirteen".