1011122931 has 16 divisors (see below), whose sum is σ = 1659279104. Its totient is φ = 533339424.

The previous prime is 1011122909. The next prime is 1011122933. The reversal of 1011122931 is 1392211101.

It is a happy number.

It is not a de Polignac number, because 1011122931 - 2⁵ = 1011122899 is a prime.

It is a super-2 number, since 2×1011122931² = 2044739163188061522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1011122898 and 1011122907.

It is not an unprimeable number, because it can be changed into a prime (1011122933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1851601 + ... + 1852146.

It is an arithmetic number, because the mean of its divisors is an integer number (103704944).

Almost surely, 2^1011122931 is an apocalyptic number.

1011122931 is a deficient number, since it is larger than the sum of its proper divisors (648156173).

1011122931 is a wasteful number, since it uses less digits than its factorization.

1011122931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703770.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 1011122931 is about 31798.1592391761. The cubic root of 1011122931 is about 1003.6939813663.

The spelling of 1011122931 in words is "one billion, eleven million, one hundred twenty-two thousand, nine hundred thirty-one".