1121931 has 22 divisors (see below), whose sum is σ = 1771460. Its totient is φ = 708588.

The previous prime is 1121899. The next prime is 1121933. The reversal of 1121931 is 1391211.

It is not a de Polignac number, because 1121931 - 2⁵ = 1121899 is a prime.

It is a super-2 number, since 2×1121931² = 2517458337522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (1121933) by changing a digit.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 59040 + ... + 59058.

2^1121931 is an apocalyptic number.

1121931 is a deficient number, since it is larger than the sum of its proper divisors (649529).

1121931 is an frugal number, since it uses more digits than its factorization.

1121931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49 (or 22 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

The square root of 1121931 is about 1059.2124432804. The cubic root of 1121931 is about 103.9095305445.

The spelling of 1121931 in words is "one million, one hundred twenty-one thousand, nine hundred thirty-one".