11731561431050 has 48 divisors (see below), whose sum is σ = 21893415815040. Its totient is φ = 4676989973760.

The previous prime is 11731561431013. The next prime is 11731561431053. The reversal of 11731561431050 is 5013416513711.

It is a super-2 number, since 2×11731561431050² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11731561430995 and 11731561431013.

It is not an unprimeable number, because it can be changed into a prime (11731561431053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329807666 + ... + 329843234.

It is an arithmetic number, because the mean of its divisors is an integer number (456112829480).

Almost surely, 2^{11731561431050} is an apocalyptic number.

11731561431050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11731561431050 is a deficient number, since it is larger than the sum of its proper divisors (10161854383990).

11731561431050 is a wasteful number, since it uses less digits than its factorization.

11731561431050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57375 (or 57370 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

Adding to 11731561431050 its reverse (5013416513711), we get a palindrome (16744977944761).

The spelling of 11731561431050 in words is "eleven trillion, seven hundred thirty-one billion, five hundred sixty-one million, four hundred thirty-one thousand, fifty".