29911407231 has 24 divisors (see below), whose sum is σ = 42802750480. Its totient is φ = 18574405632.

The previous prime is 29911407217. The next prime is 29911407269. The reversal of 29911407231 is 13270411992.

It is not a de Polignac number, because 29911407231 - 2¹⁰ = 29911406207 is a prime.

It is a super-2 number, since 2×29911407231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29911407231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29911407431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93736 + ... + 261933.

Almost surely, 2^29911407231 is an apocalyptic number.

29911407231 is a deficient number, since it is larger than the sum of its proper divisors (12891343249).

29911407231 is a wasteful number, since it uses less digits than its factorization.

29911407231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355803 (or 355786 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The spelling of 29911407231 in words is "twenty-nine billion, nine hundred eleven million, four hundred seven thousand, two hundred thirty-one".