4021031312357 has 2 divisors, whose sum is σ = 4021031312358. Its totient is φ = 4021031312356.

The previous prime is 4021031312329. The next prime is 4021031312359. The reversal of 4021031312357 is 7532131301204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2613424658881 + 1407606653476 = 1616609^2 + 1186426^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021031312357 - 2¹⁰ = 4021031311333 is a prime.

Together with 4021031312359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021031312359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010515656178 + 2010515656179.

It is an arithmetic number, because the mean of its divisors is an integer number (2010515656179).

Almost surely, 2^{4021031312357} is an apocalyptic number.

It is an amenable number.

4021031312357 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021031312357 is an equidigital number, since it uses as much as digits as its factorization.

4021031312357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 4021031312357 in words is "four trillion, twenty-one billion, thirty-one million, three hundred twelve thousand, three hundred fifty-seven".