31534553414431 has 2 divisors, whose sum is σ = 31534553414432. Its totient is φ = 31534553414430.

The previous prime is 31534553414387. The next prime is 31534553414447. The reversal of 31534553414431 is 13441435543513.

It is a strong prime.

It is an emirp because it is prime and its reverse (13441435543513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31534553414431 - 2¹⁹ = 31534552890143 is a prime.

It is a super-2 number, since 2×31534553414431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31534553414531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15767276707215 + 15767276707216.

It is an arithmetic number, because the mean of its divisors is an integer number (15767276707216).

Almost surely, 2^{31534553414431} is an apocalyptic number.

31534553414431 is a deficient number, since it is larger than the sum of its proper divisors (1).

31534553414431 is an equidigital number, since it uses as much as digits as its factorization.

31534553414431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 46.

Adding to 31534553414431 its reverse (13441435543513), we get a palindrome (44975988957944).

The spelling of 31534553414431 in words is "thirty-one trillion, five hundred thirty-four billion, five hundred fifty-three million, four hundred fourteen thousand, four hundred thirty-one".