1055111131 has 12 divisors (see below), whose sum is σ = 1126474272. Its totient is φ = 987740336.

The previous prime is 1055111119. The next prime is 1055111143. The reversal of 1055111131 is 1311115501.

It is an interprime number because it is at equal distance from previous prime (1055111119) and next prime (1055111143).

It is not a de Polignac number, because 1055111131 - 2⁷ = 1055111003 is a prime.

It is a super-2 number, since 2×1055111131² = 2226518997520198322, 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 = 1055111099 and 1055111108.

It is not an unprimeable number, because it can be changed into a prime (1055111111) 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, 3645 + ... + 46081.

It is an arithmetic number, because the mean of its divisors is an integer number (93872856).

Almost surely, 2^1055111131 is an apocalyptic number.

1055111131 is a deficient number, since it is larger than the sum of its proper divisors (71363141).

1055111131 is an equidigital number, since it uses as much as digits as its factorization.

1055111131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42530 (or 42507 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 19.

The square root of 1055111131 is about 32482.4742130276. The cubic root of 1055111131 is about 1018.0428737815.

Adding to 1055111131 its reverse (1311115501), we get a palindrome (2366226632).

The spelling of 1055111131 in words is "one billion, fifty-five million, one hundred eleven thousand, one hundred thirty-one".