31423588035491 has 2 divisors, whose sum is σ = 31423588035492. Its totient is φ = 31423588035490.

The previous prime is 31423588035263. The next prime is 31423588035517. The reversal of 31423588035491 is 19453088532413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31423588035491 - 2¹⁰ = 31423588034467 is a prime.

It is a super-2 number, since 2×31423588035491² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31423588035991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711794017745 + 15711794017746.

It is an arithmetic number, because the mean of its divisors is an integer number (15711794017746).

Almost surely, 2^{31423588035491} is an apocalyptic number.

31423588035491 is a deficient number, since it is larger than the sum of its proper divisors (1).

31423588035491 is an equidigital number, since it uses as much as digits as its factorization.

31423588035491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12441600, while the sum is 56.

The spelling of 31423588035491 in words is "thirty-one trillion, four hundred twenty-three billion, five hundred eighty-eight million, thirty-five thousand, four hundred ninety-one".