11455142131231 has 4 divisors (see below), whose sum is σ = 11463485280552. Its totient is φ = 11446798981912.

The previous prime is 11455142131163. The next prime is 11455142131247. The reversal of 11455142131231 is 13213124155411.

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 11455142131231 - 2¹³ = 11455142123039 is a prime.

It is a super-2 number, since 2×11455142131231² (a number of 27 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 (11455142141231) 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, 4171572601 + ... + 4171575346.

It is an arithmetic number, because the mean of its divisors is an integer number (2865871320138).

Almost surely, 2^{11455142131231} is an apocalyptic number.

11455142131231 is a deficient number, since it is larger than the sum of its proper divisors (8343149321).

11455142131231 is an equidigital number, since it uses as much as digits as its factorization.

11455142131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343149320.

The product of its digits is 14400, while the sum is 34.

Adding to 11455142131231 its reverse (13213124155411), we get a palindrome (24668266286642).

The spelling of 11455142131231 in words is "eleven trillion, four hundred fifty-five billion, one hundred forty-two million, one hundred thirty-one thousand, two hundred thirty-one".