202031113 has 4 divisors (see below), whose sum is σ = 202082688. Its totient is φ = 201979540.

The previous prime is 202031107. The next prime is 202031117. The reversal of 202031113 is 311130202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311130202 = 2 ⋅155565101.

It is a cyclic number.

It is not a de Polignac number, because 202031113 - 2¹³ = 202022921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202031093 and 202031102.

It is not an unprimeable number, because it can be changed into a prime (202031117) 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, 19381 + ... + 27922.

It is an arithmetic number, because the mean of its divisors is an integer number (50520672).

Almost surely, 2^202031113 is an apocalyptic number.

It is an amenable number.

202031113 is a deficient number, since it is larger than the sum of its proper divisors (51575).

202031113 is an equidigital number, since it uses as much as digits as its factorization.

202031113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51574.

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

The square root of 202031113 is about 14213.7649129286. The cubic root of 202031113 is about 586.7765537890.

Adding to 202031113 its reverse (311130202), we get a palindrome (513161315).

It can be divided in two parts, 20203 and 1113, that added together give a square (21316 = 146²).

The spelling of 202031113 in words is "two hundred two million, thirty-one thousand, one hundred thirteen".