97430431 has 4 divisors (see below), whose sum is σ = 111349072. Its totient is φ = 83511792.

The previous prime is 97430429. The next prime is 97430449. The reversal of 97430431 is 13403479.

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

It is not a de Polignac number, because 97430431 - 2¹ = 97430429 is a prime.

It is a super-2 number, since 2×97430431² = 18985377769691522, 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 = 97430393 and 97430402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97430491) 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, 6959310 + ... + 6959323.

It is an arithmetic number, because the mean of its divisors is an integer number (27837268).

Almost surely, 2^97430431 is an apocalyptic number.

97430431 is a deficient number, since it is larger than the sum of its proper divisors (13918641).

97430431 is a wasteful number, since it uses less digits than its factorization.

97430431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13918640.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 97430431 is about 9870.6854371923. The cubic root of 97430431 is about 460.1487090090.

The spelling of 97430431 in words is "ninety-seven million, four hundred thirty thousand, four hundred thirty-one".