20413121310 has 64 divisors (see below), whose sum is σ = 55593216000. Its totient is φ = 5327676576.

The previous prime is 20413121303. The next prime is 20413121329. The reversal of 20413121310 is 1312131402.

20413121310 is a `hidden beast` number, since 2 + 0 + 41 + 312 + 1 + 310 = 666.

It is a super-2 number, since 2×20413121310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 791610 + ... + 816989.

It is an arithmetic number, because the mean of its divisors is an integer number (868644000).

Almost surely, 2^20413121310 is an apocalyptic number.

20413121310 is an abundant number, since it is smaller than the sum of its proper divisors (35180094690).

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

20413121310 is a wasteful number, since it uses less digits than its factorization.

20413121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608662 (or 1608656 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20413121310 its reverse (1312131402), we get a palindrome (21725252712).

The spelling of 20413121310 in words is "twenty billion, four hundred thirteen million, one hundred twenty-one thousand, three hundred ten".