31023020201357 has 2 divisors, whose sum is σ = 31023020201358. Its totient is φ = 31023020201356.

The previous prime is 31023020201297. The next prime is 31023020201377. The reversal of 31023020201357 is 75310202032013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27590426570281 + 3432593631076 = 5252659^2 + 1852726^2 .

It is a cyclic number.

It is not a de Polignac number, because 31023020201357 - 2⁶ = 31023020201293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31023020201377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511510100678 + 15511510100679.

It is an arithmetic number, because the mean of its divisors is an integer number (15511510100679).

Almost surely, 2^{31023020201357} is an apocalyptic number.

It is an amenable number.

31023020201357 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023020201357 is an equidigital number, since it uses as much as digits as its factorization.

31023020201357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

The spelling of 31023020201357 in words is "thirty-one trillion, twenty-three billion, twenty million, two hundred one thousand, three hundred fifty-seven".