29161031 has 4 divisors (see below), whose sum is σ = 29433672. Its totient is φ = 28888392.

The previous prime is 29161007. The next prime is 29161043. The reversal of 29161031 is 13016192.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29161031 is a prime.

It is a super-2 number, since 2×29161031² = 1700731457965922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29160988 and 29161006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29161081) 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, 136160 + ... + 136373.

It is an arithmetic number, because the mean of its divisors is an integer number (7358418).

Almost surely, 2^29161031 is an apocalyptic number.

29161031 is a deficient number, since it is larger than the sum of its proper divisors (272641).

29161031 is a wasteful number, since it uses less digits than its factorization.

29161031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272640.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 29161031 is about 5400.0954621192. The cubic root of 29161031 is about 307.7992979006.

The spelling of 29161031 in words is "twenty-nine million, one hundred sixty-one thousand, thirty-one".