90021013023031 has 2 divisors, whose sum is σ = 90021013023032. Its totient is φ = 90021013023030.

The previous prime is 90021013023023. The next prime is 90021013023049. The reversal of 90021013023031 is 13032031012009.

It is a weak prime.

It is an emirp because it is prime and its reverse (13032031012009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90021013023031 - 2³ = 90021013023023 is a prime.

It is a super-2 number, since 2×90021013023031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90021013022987 and 90021013023005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90021013021031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45010506511515 + 45010506511516.

It is an arithmetic number, because the mean of its divisors is an integer number (45010506511516).

Almost surely, 2^{90021013023031} is an apocalyptic number.

90021013023031 is a deficient number, since it is larger than the sum of its proper divisors (1).

90021013023031 is an equidigital number, since it uses as much as digits as its factorization.

90021013023031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 90021013023031 in words is "ninety trillion, twenty-one billion, thirteen million, twenty-three thousand, thirty-one".