20231497 has 12 divisors (see below), whose sum is σ = 23901264. Its totient is φ = 16975920.

The previous prime is 20231461. The next prime is 20231503. The reversal of 20231497 is 79413202.

It is a de Polignac number, because none of the positive numbers 2^k-20231497 is a prime.

It is a super-2 number, since 2×20231497² = 818626941722018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20231417) 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, 3583 + ... + 7300.

It is an arithmetic number, because the mean of its divisors is an integer number (1991772).

Almost surely, 2^20231497 is an apocalyptic number.

It is an amenable number.

20231497 is a deficient number, since it is larger than the sum of its proper divisors (3669767).

20231497 is a wasteful number, since it uses less digits than its factorization.

20231497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920 (or 10907 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20231497 is about 4497.9436412654. The cubic root of 20231497 is about 272.4850458926.

Adding to 20231497 its reverse (79413202), we get a palindrome (99644699).

The spelling of 20231497 in words is "twenty million, two hundred thirty-one thousand, four hundred ninety-seven".