1115100431 has 12 divisors (see below), whose sum is σ = 1225408920. Its totient is φ = 1013308800.

The previous prime is 1115100419. The next prime is 1115100433. The reversal of 1115100431 is 1340015111.

It is a de Polignac number, because none of the positive numbers 2^k-1115100431 is a prime.

It is a super-2 number, since 2×1115100431² = 2486897942432771522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115100433) 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, 58145 + ... + 74906.

It is an arithmetic number, because the mean of its divisors is an integer number (102117410).

Almost surely, 2^1115100431 is an apocalyptic number.

1115100431 is a deficient number, since it is larger than the sum of its proper divisors (110308489).

1115100431 is a wasteful number, since it uses less digits than its factorization.

1115100431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133114 (or 133097 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1115100431 is about 33393.1195158524. The cubic root of 1115100431 is about 1036.9822625292.

Adding to 1115100431 its reverse (1340015111), we get a palindrome (2455115542).

The spelling of 1115100431 in words is "one billion, one hundred fifteen million, one hundred thousand, four hundred thirty-one".