31046121 has 12 divisors (see below), whose sum is σ = 45121648. Its totient is φ = 20569464.

The previous prime is 31046117. The next prime is 31046161. The reversal of 31046121 is 12164013.

It is a happy number.

It is not a de Polignac number, because 31046121 - 2² = 31046117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31046094 and 31046103.

It is not an unprimeable number, because it can be changed into a prime (31046161) 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, 9115 + ... + 12048.

Almost surely, 2^31046121 is an apocalyptic number.

It is an amenable number.

31046121 is a deficient number, since it is larger than the sum of its proper divisors (14075527).

31046121 is a wasteful number, since it uses less digits than its factorization.

31046121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21332 (or 21329 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 31046121 is about 5571.9046115310. The cubic root of 31046121 is about 314.2937768790.

The spelling of 31046121 in words is "thirty-one million, forty-six thousand, one hundred twenty-one".