29900831 has 2 divisors, whose sum is σ = 29900832. Its totient is φ = 29900830.

The previous prime is 29900821. The next prime is 29900837. The reversal of 29900831 is 13800992.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29900831 is a prime.

It is a super-2 number, since 2×29900831² = 1788119388981122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29900837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14950415 + 14950416.

It is an arithmetic number, because the mean of its divisors is an integer number (14950416).

Almost surely, 2^29900831 is an apocalyptic number.

29900831 is a deficient number, since it is larger than the sum of its proper divisors (1).

29900831 is an equidigital number, since it uses as much as digits as its factorization.

29900831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 29900831 is about 5468.1652315928. The cubic root of 29900831 is about 310.3804935963.

The spelling of 29900831 in words is "twenty-nine million, nine hundred thousand, eight hundred thirty-one".