29531 has 2 divisors, whose sum is σ = 29532. Its totient is φ = 29530.

The previous prime is 29527. The next prime is 29537. The reversal of 29531 is 13592.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29531 - 2² = 29527 is a prime.

It is a super-2 number, since 2×29531² = 1744159922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 29531.

It is not a weakly prime, because it can be changed into another prime (29537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14765 + 14766.

It is an arithmetic number, because the mean of its divisors is an integer number (14766).

29531 is a Friedman number, since it can be written as (13+9^5)/2, using all its digits and the basic arithmetic operations.

2²⁹⁵³¹ is an apocalyptic number.

29531 is a deficient number, since it is larger than the sum of its proper divisors (1).

29531 is an equidigital number, since it uses as much as digits as its factorization.

29531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 20.

The square root of 29531 is about 171.8458611663. The cubic root of 29531 is about 30.9095525253.

The spelling of 29531 in words is "twenty-nine thousand, five hundred thirty-one".