29986631 has 2 divisors, whose sum is σ = 29986632. Its totient is φ = 29986630.

The previous prime is 29986577. The next prime is 29986633. The reversal of 29986631 is 13668992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29986631 - 2¹⁴ = 29970247 is a prime.

It is a super-2 number, since 2×29986631² = 1798396077460322, which contains 22 as substring.

Together with 29986633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29986633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14993315 + 14993316.

It is an arithmetic number, because the mean of its divisors is an integer number (14993316).

Almost surely, 2^29986631 is an apocalyptic number.

29986631 is a deficient number, since it is larger than the sum of its proper divisors (1).

29986631 is an equidigital number, since it uses as much as digits as its factorization.

29986631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 29986631 is about 5476.0050219115. The cubic root of 29986631 is about 310.6770875248.

The spelling of 29986631 in words is "twenty-nine million, nine hundred eighty-six thousand, six hundred thirty-one".