121896031 has 4 divisors (see below), whose sum is σ = 122013064. Its totient is φ = 121779000.

The previous prime is 121896017. The next prime is 121896043. The reversal of 121896031 is 130698121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121896031 - 2²¹ = 119798879 is a prime.

It is a super-2 number, since 2×121896031² = 29717284747105922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121895984 and 121896002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121896011) 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, 56940 + ... + 59041.

It is an arithmetic number, because the mean of its divisors is an integer number (30503266).

Almost surely, 2^121896031 is an apocalyptic number.

121896031 is a deficient number, since it is larger than the sum of its proper divisors (117033).

121896031 is a wasteful number, since it uses less digits than its factorization.

121896031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117032.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 121896031 is about 11040.6535585535. The cubic root of 121896031 is about 495.8266376768.

The spelling of 121896031 in words is "one hundred twenty-one million, eight hundred ninety-six thousand, thirty-one".