29130831 has 6 divisors (see below), whose sum is σ = 42077880. Its totient is φ = 19420548.

The previous prime is 29130821. The next prime is 29130833. The reversal of 29130831 is 13803192.

It is not a de Polignac number, because 29130831 - 2¹⁴ = 29114447 is a prime.

It is a super-2 number, since 2×29130831² = 1697210629501122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29130795 and 29130804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29130833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1618371 + ... + 1618388.

It is an arithmetic number, because the mean of its divisors is an integer number (7012980).

Almost surely, 2^29130831 is an apocalyptic number.

29130831 is a deficient number, since it is larger than the sum of its proper divisors (12947049).

29130831 is a wasteful number, since it uses less digits than its factorization.

29130831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236765 (or 3236762 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 29130831 is about 5397.2984909119. The cubic root of 29130831 is about 307.6930059391.

The spelling of 29130831 in words is "twenty-nine million, one hundred thirty thousand, eight hundred thirty-one".