97423511 has 4 divisors (see below), whose sum is σ = 98656800. Its totient is φ = 96190224.

The previous prime is 97423463. The next prime is 97423519. The reversal of 97423511 is 11532479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11532479 = 7 ⋅1647497.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97423511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97423519) 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, 616526 + ... + 616683.

It is an arithmetic number, because the mean of its divisors is an integer number (24664200).

Almost surely, 2^97423511 is an apocalyptic number.

97423511 is a deficient number, since it is larger than the sum of its proper divisors (1233289).

97423511 is a wasteful number, since it uses less digits than its factorization.

97423511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233288.

The product of its digits is 7560, while the sum is 32.

The square root of 97423511 is about 9870.3348980670. The cubic root of 97423511 is about 460.1378147246.

The spelling of 97423511 in words is "ninety-seven million, four hundred twenty-three thousand, five hundred eleven".