121313031 has 8 divisors (see below), whose sum is σ = 184857984. Its totient is φ = 69321720.

The previous prime is 121313029. The next prime is 121313053. The reversal of 121313031 is 130313121.

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

It is not a de Polignac number, because 121313031 - 2¹ = 121313029 is a prime.

It is a super-2 number, since 2×121313031² = 29433702980813922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121313031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121313011) 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, 2888385 + ... + 2888426.

It is an arithmetic number, because the mean of its divisors is an integer number (23107248).

Almost surely, 2^121313031 is an apocalyptic number.

121313031 is a deficient number, since it is larger than the sum of its proper divisors (63544953).

121313031 is an equidigital number, since it uses as much as digits as its factorization.

121313031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776821.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 121313031 is about 11014.2194911850. The cubic root of 121313031 is about 495.0349001003.

Adding to 121313031 its reverse (130313121), we get a palindrome (251626152).

The spelling of 121313031 in words is "one hundred twenty-one million, three hundred thirteen thousand, thirty-one".