1115143254631 has 4 divisors (see below), whose sum is σ = 1274449433872. Its totient is φ = 955837075392.

The previous prime is 1115143254607. The next prime is 1115143254683. The reversal of 1115143254631 is 1364523415111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1115143254631 - 2¹⁹ = 1115142730343 is a prime.

It is a super-2 number, since 2×1115143254631² (a number of 25 digits) 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 (1115143254031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79653089610 + ... + 79653089623.

It is an arithmetic number, because the mean of its divisors is an integer number (318612358468).

Almost surely, 2^{1115143254631} is an apocalyptic number.

1115143254631 is a deficient number, since it is larger than the sum of its proper divisors (159306179241).

1115143254631 is an equidigital number, since it uses as much as digits as its factorization.

1115143254631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159306179240.

The product of its digits is 43200, while the sum is 37.

Adding to 1115143254631 its reverse (1364523415111), we get a palindrome (2479666669742).

The spelling of 1115143254631 in words is "one trillion, one hundred fifteen billion, one hundred forty-three million, two hundred fifty-four thousand, six hundred thirty-one".