157431447 has 12 divisors (see below), whose sum is σ = 228659704. Its totient is φ = 104373360.

The previous prime is 157431433. The next prime is 157431479. The reversal of 157431447 is 744134751.

157431447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157431447 - 2⁶ = 157431383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157431497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46693 + ... + 49950.

Almost surely, 2^157431447 is an apocalyptic number.

157431447 is a deficient number, since it is larger than the sum of its proper divisors (71228257).

157431447 is a wasteful number, since it uses less digits than its factorization.

157431447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96830 (or 96827 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 157431447 is about 12547.1688838558. The cubic root of 157431447 is about 539.9627855012.

The spelling of 157431447 in words is "one hundred fifty-seven million, four hundred thirty-one thousand, four hundred forty-seven".