11641487831 has 2 divisors, whose sum is σ = 11641487832. Its totient is φ = 11641487830.

The previous prime is 11641487821. The next prime is 11641487867. The reversal of 11641487831 is 13878414611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11641487831 is a prime.

It is a super-2 number, since 2×11641487831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11641487821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5820743915 + 5820743916.

It is an arithmetic number, because the mean of its divisors is an integer number (5820743916).

Almost surely, 2^11641487831 is an apocalyptic number.

11641487831 is a deficient number, since it is larger than the sum of its proper divisors (1).

11641487831 is an equidigital number, since it uses as much as digits as its factorization.

11641487831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 44.

The spelling of 11641487831 in words is "eleven billion, six hundred forty-one million, four hundred eighty-seven thousand, eight hundred thirty-one".