23021200340 has 12 divisors (see below), whose sum is σ = 48344520756. Its totient is φ = 9208480128.

The previous prime is 23021200339. The next prime is 23021200351. The reversal of 23021200340 is 4300212032.

It can be written as a sum of positive squares in 2 ways, for example, as 5343902404 + 17677297936 = 73102^2 + 132956^2 .

It is a super-2 number, since 2×23021200340² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575529989 + ... + 575530028.

It is an arithmetic number, because the mean of its divisors is an integer number (4028710063).

Almost surely, 2^23021200340 is an apocalyptic number.

23021200340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23021200340 is an abundant number, since it is smaller than the sum of its proper divisors (25323320416).

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

23021200340 is a wasteful number, since it uses less digits than its factorization.

23021200340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151060026 (or 1151060024 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 23021200340 its reverse (4300212032), we get a palindrome (27321412372).

The spelling of 23021200340 in words is "twenty-three billion, twenty-one million, two hundred thousand, three hundred forty".