157143031091 has 2 divisors, whose sum is σ = 157143031092. Its totient is φ = 157143031090.

The previous prime is 157143031081. The next prime is 157143031139. The reversal of 157143031091 is 190130341751.

It is a happy number.

157143031091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157143031091 - 2²² = 157138836787 is a prime.

It is not a weakly prime, because it can be changed into another prime (157143031021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78571515545 + 78571515546.

It is an arithmetic number, because the mean of its divisors is an integer number (78571515546).

Almost surely, 2^157143031091 is an apocalyptic number.

157143031091 is a deficient number, since it is larger than the sum of its proper divisors (1).

157143031091 is an equidigital number, since it uses as much as digits as its factorization.

157143031091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The spelling of 157143031091 in words is "one hundred fifty-seven billion, one hundred forty-three million, thirty-one thousand, ninety-one".