1121013031 has 16 divisors (see below), whose sum is σ = 1240475904. Its totient is φ = 1007639424.

The previous prime is 1121012989. The next prime is 1121013037. The reversal of 1121013031 is 1303101211.

It is a cyclic number.

It is not a de Polignac number, because 1121013031 - 2⁷ = 1121012903 is a prime.

It is a super-2 number, since 2×1121013031² = 2513340431343613922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121013037) 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, 305896 + ... + 309538.

It is an arithmetic number, because the mean of its divisors is an integer number (77529744).

Almost surely, 2^1121013031 is an apocalyptic number.

1121013031 is a deficient number, since it is larger than the sum of its proper divisors (119462873).

1121013031 is a wasteful number, since it uses less digits than its factorization.

1121013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1121013031 is about 33481.5326859449. The cubic root of 1121013031 is about 1038.8118306301.

Adding to 1121013031 its reverse (1303101211), we get a palindrome (2424114242).

The spelling of 1121013031 in words is "one billion, one hundred twenty-one million, thirteen thousand, thirty-one".