8231019225431 has 2 divisors, whose sum is σ = 8231019225432. Its totient is φ = 8231019225430.

The previous prime is 8231019225427. The next prime is 8231019225487. The reversal of 8231019225431 is 1345229101328.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8231019225431 - 2² = 8231019225427 is a prime.

It is a super-2 number, since 2×8231019225431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8231019221431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4115509612715 + 4115509612716.

It is an arithmetic number, because the mean of its divisors is an integer number (4115509612716).

Almost surely, 2^{8231019225431} is an apocalyptic number.

8231019225431 is a deficient number, since it is larger than the sum of its proper divisors (1).

8231019225431 is an equidigital number, since it uses as much as digits as its factorization.

8231019225431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 8231019225431 in words is "eight trillion, two hundred thirty-one billion, nineteen million, two hundred twenty-five thousand, four hundred thirty-one".