121031397 has 12 divisors (see below), whose sum is σ = 177037120. Its totient is φ = 79665768.

The previous prime is 121031371. The next prime is 121031399. The reversal of 121031397 is 793130121.

It is not a de Polignac number, because 121031397 - 2⁷ = 121031269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121031397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84403 + ... + 85824.

Almost surely, 2^121031397 is an apocalyptic number.

It is an amenable number.

121031397 is a deficient number, since it is larger than the sum of its proper divisors (56005723).

121031397 is a wasteful number, since it uses less digits than its factorization.

121031397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170312 (or 170309 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 121031397 is about 11001.4270437975. The cubic root of 121031397 is about 494.6515208752.

The spelling of 121031397 in words is "one hundred twenty-one million, thirty-one thousand, three hundred ninety-seven".