97129031 has 4 divisors (see below), whose sum is σ = 97154064. Its totient is φ = 97104000.

The previous prime is 97129013. The next prime is 97129049. The reversal of 97129031 is 13092179.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13092179 = 47 ⋅278557.

It is an interprime number because it is at equal distance from previous prime (97129013) and next prime (97129049).

It is a cyclic number.

It is not a de Polignac number, because 97129031 - 2¹⁰ = 97128007 is a prime.

It is a super-2 number, since 2×97129031² = 18868097325997922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97129001) 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, 5315 + ... + 14916.

It is an arithmetic number, because the mean of its divisors is an integer number (24288516).

Almost surely, 2^97129031 is an apocalyptic number.

97129031 is a deficient number, since it is larger than the sum of its proper divisors (25033).

97129031 is a wasteful number, since it uses less digits than its factorization.

97129031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25032.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 97129031 is about 9855.4061813809. The cubic root of 97129031 is about 459.6737305156.

The spelling of 97129031 in words is "ninety-seven million, one hundred twenty-nine thousand, thirty-one".