97231787 has 12 divisors (see below), whose sum is σ = 104145384. Its totient is φ = 90715680.

The previous prime is 97231763. The next prime is 97231811. The reversal of 97231787 is 78713279.

It is an interprime number because it is at equal distance from previous prime (97231763) and next prime (97231811).

It is not a de Polignac number, because 97231787 - 2¹⁴ = 97215403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97231727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19448 + ... + 23930.

It is an arithmetic number, because the mean of its divisors is an integer number (8678782).

Almost surely, 2^97231787 is an apocalyptic number.

97231787 is a deficient number, since it is larger than the sum of its proper divisors (6913597).

97231787 is a wasteful number, since it uses less digits than its factorization.

97231787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4570 (or 4547 counting only the distinct ones).

The product of its digits is 148176, while the sum is 44.

The square root of 97231787 is about 9860.6179826621. The cubic root of 97231787 is about 459.8357747100.

The spelling of 97231787 in words is "ninety-seven million, two hundred thirty-one thousand, seven hundred eighty-seven".