115531631461 has 8 divisors (see below), whose sum is σ = 119642735520. Its totient is φ = 111485269392.

The previous prime is 115531631443. The next prime is 115531631507. The reversal of 115531631461 is 164136135511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115531631461 - 2¹⁹ = 115531107173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115531631461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115531631861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16181866 + ... + 16189003.

It is an arithmetic number, because the mean of its divisors is an integer number (14955341940).

Almost surely, 2^115531631461 is an apocalyptic number.

It is an amenable number.

115531631461 is a deficient number, since it is larger than the sum of its proper divisors (4111104059).

115531631461 is an equidigital number, since it uses as much as digits as its factorization.

115531631461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32370995.

The product of its digits is 32400, while the sum is 37.

Adding to 115531631461 its reverse (164136135511), we get a palindrome (279667766972).

The spelling of 115531631461 in words is "one hundred fifteen billion, five hundred thirty-one million, six hundred thirty-one thousand, four hundred sixty-one".