20310143340 has 24 divisors (see below), whose sum is σ = 56868401520. Its totient is φ = 5416038208.

The previous prime is 20310143333. The next prime is 20310143351. The reversal of 20310143340 is 4334101302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169251135 + ... + 169251254.

It is an arithmetic number, because the mean of its divisors is an integer number (2369516730).

Almost surely, 2^20310143340 is an apocalyptic number.

20310143340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310143340 is an abundant number, since it is smaller than the sum of its proper divisors (36558258180).

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

20310143340 is a wasteful number, since it uses less digits than its factorization.

20310143340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338502401 (or 338502399 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20310143340 its reverse (4334101302), we get a palindrome (24644244642).

The spelling of 20310143340 in words is "twenty billion, three hundred ten million, one hundred forty-three thousand, three hundred forty".