29397491431 has 16 divisors (see below), whose sum is σ = 36655216128. Its totient is φ = 22904762400.

The previous prime is 29397491411. The next prime is 29397491441. The reversal of 29397491431 is 13419479392.

It is a cyclic number.

It is not a de Polignac number, because 29397491431 - 2⁵ = 29397491399 is a prime.

It is a super-2 number, since 2×29397491431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29397491401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1273926 + ... + 1296796.

It is an arithmetic number, because the mean of its divisors is an integer number (2290951008).

Almost surely, 2^29397491431 is an apocalyptic number.

29397491431 is a deficient number, since it is larger than the sum of its proper divisors (7257724697).

29397491431 is a wasteful number, since it uses less digits than its factorization.

29397491431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39582.

The product of its digits is 1469664, while the sum is 52.

The spelling of 29397491431 in words is "twenty-nine billion, three hundred ninety-seven million, four hundred ninety-one thousand, four hundred thirty-one".