331022220157 has 2 divisors, whose sum is σ = 331022220158. Its totient is φ = 331022220156.

The previous prime is 331022220131. The next prime is 331022220203. The reversal of 331022220157 is 751022220133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319655675161 + 11366544996 = 565381^2 + 106614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331022220157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331022220107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165511110078 + 165511110079.

It is an arithmetic number, because the mean of its divisors is an integer number (165511110079).

Almost surely, 2^331022220157 is an apocalyptic number.

It is an amenable number.

331022220157 is a deficient number, since it is larger than the sum of its proper divisors (1).

331022220157 is an equidigital number, since it uses as much as digits as its factorization.

331022220157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 331022220157 in words is "three hundred thirty-one billion, twenty-two million, two hundred twenty thousand, one hundred fifty-seven".