11731234553 has 2 divisors, whose sum is σ = 11731234554. Its totient is φ = 11731234552.

The previous prime is 11731234547. The next prime is 11731234573. The reversal of 11731234553 is 35543213711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9134007184 + 2597227369 = 95572^2 + 50963^2 .

It is a cyclic number.

It is not a de Polignac number, because 11731234553 - 2⁸ = 11731234297 is a prime.

It is a super-2 number, since 2×11731234553² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11731234573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5865617276 + 5865617277.

It is an arithmetic number, because the mean of its divisors is an integer number (5865617277).

Almost surely, 2^11731234553 is an apocalyptic number.

It is an amenable number.

11731234553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11731234553 is an equidigital number, since it uses as much as digits as its factorization.

11731234553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 35.

The spelling of 11731234553 in words is "eleven billion, seven hundred thirty-one million, two hundred thirty-four thousand, five hundred fifty-three".