113203631 has 8 divisors (see below), whose sum is σ = 118646880. Its totient is φ = 107803872.

The previous prime is 113203619. The next prime is 113203633. The reversal of 113203631 is 136302311.

It is a happy number.

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 113203631 - 2⁶ = 113203567 is a prime.

It is a super-2 number, since 2×113203631² = 25630124143168322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113203633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5480 + ... + 16013.

It is an arithmetic number, because the mean of its divisors is an integer number (14830860).

Almost surely, 2^113203631 is an apocalyptic number.

113203631 is a deficient number, since it is larger than the sum of its proper divisors (5443249).

113203631 is a wasteful number, since it uses less digits than its factorization.

113203631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21745.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 113203631 is about 10639.7194981823. The cubic root of 113203631 is about 483.7490431690.

Adding to 113203631 its reverse (136302311), we get a palindrome (249505942).

The spelling of 113203631 in words is "one hundred thirteen million, two hundred three thousand, six hundred thirty-one".