1291424089231 has 4 divisors (see below), whose sum is σ = 1326327443032. Its totient is φ = 1256520735432.

The previous prime is 1291424089223. The next prime is 1291424089237. The reversal of 1291424089231 is 1329804241921.

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 1291424089231 - 2³ = 1291424089223 is a prime.

It is a super-2 number, since 2×1291424089231² (a number of 25 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 (1291424089237) 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, 17451676845 + ... + 17451676918.

It is an arithmetic number, because the mean of its divisors is an integer number (331581860758).

Almost surely, 2^{1291424089231} is an apocalyptic number.

1291424089231 is a deficient number, since it is larger than the sum of its proper divisors (34903353801).

1291424089231 is an equidigital number, since it uses as much as digits as its factorization.

1291424089231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34903353800.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 1291424089231 in words is "one trillion, two hundred ninety-one billion, four hundred twenty-four million, eighty-nine thousand, two hundred thirty-one".