121045031 has 4 divisors (see below), whose sum is σ = 121321200. Its totient is φ = 120768864.

The previous prime is 121044967. The next prime is 121045033. The reversal of 121045031 is 130540121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130540121 = 409 ⋅319169.

It is a cyclic number.

It is not a de Polignac number, because 121045031 - 2⁶ = 121044967 is a prime.

It is a super-2 number, since 2×121045031² = 29303799059581922, 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 (121045033) 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, 137426 + ... + 138303.

It is an arithmetic number, because the mean of its divisors is an integer number (30330300).

Almost surely, 2^121045031 is an apocalyptic number.

121045031 is a deficient number, since it is larger than the sum of its proper divisors (276169).

121045031 is an equidigital number, since it uses as much as digits as its factorization.

121045031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276168.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121045031 is about 11002.0466732331. The cubic root of 121045031 is about 494.6700940878.

Adding to 121045031 its reverse (130540121), we get a palindrome (251585152).

The spelling of 121045031 in words is "one hundred twenty-one million, forty-five thousand, thirty-one".