20231340354 has 40 divisors (see below), whose sum is σ = 46896412860. Its totient is φ = 6511234464.

The previous prime is 20231340319. The next prime is 20231340379. The reversal of 20231340354 is 45304313202.

20231340354 is a `hidden beast` number, since 20 + 231 + 3 + 403 + 5 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18476149329 + 1755191025 = 135927^2 + 41895^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2148489 + ... + 2157884.

Almost surely, 2^20231340354 is an apocalyptic number.

20231340354 is an abundant number, since it is smaller than the sum of its proper divisors (26665072506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231340354 is a wasteful number, since it uses less digits than its factorization.

20231340354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306416 (or 4306407 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 20231340354 its reverse (45304313202), we get a palindrome (65535653556).

The spelling of 20231340354 in words is "twenty billion, two hundred thirty-one million, three hundred forty thousand, three hundred fifty-four".