151231901 has 2 divisors, whose sum is σ = 151231902. Its totient is φ = 151231900.

The previous prime is 151231867. The next prime is 151231921. The reversal of 151231901 is 109132151.

151231901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150087001 + 1144900 = 12251^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 151231901 - 2²⁶ = 84123037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151231921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75615950 + 75615951.

It is an arithmetic number, because the mean of its divisors is an integer number (75615951).

Almost surely, 2^151231901 is an apocalyptic number.

It is an amenable number.

151231901 is a deficient number, since it is larger than the sum of its proper divisors (1).

151231901 is an equidigital number, since it uses as much as digits as its factorization.

151231901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 151231901 is about 12297.6380252470. The cubic root of 151231901 is about 532.7798653759.

The spelling of 151231901 in words is "one hundred fifty-one million, two hundred thirty-one thousand, nine hundred one".