29430631 has 4 divisors (see below), whose sum is σ = 29447392. Its totient is φ = 29413872.

The previous prime is 29430613. The next prime is 29430637. The reversal of 29430631 is 13603492.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29430631 - 2⁹ = 29430119 is a prime.

It is a super-2 number, since 2×29430631² = 1732324082116322, which 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 29430631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29430637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5391 + ... + 9376.

It is an arithmetic number, because the mean of its divisors is an integer number (7361848).

Almost surely, 2^29430631 is an apocalyptic number.

29430631 is a deficient number, since it is larger than the sum of its proper divisors (16761).

29430631 is a wasteful number, since it uses less digits than its factorization.

29430631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16760.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 29430631 is about 5425.0005529954. Note that the first 3 decimals coincide. The cubic root of 29430631 is about 308.7449465099.

The spelling of 29430631 in words is "twenty-nine million, four hundred thirty thousand, six hundred thirty-one".