13213400340 has 96 divisors (see below), whose sum is σ = 43266263040. Its totient is φ = 2949964416.

The previous prime is 13213400339. The next prime is 13213400353. The reversal of 13213400340 is 4300431231.

It is a super-2 number, since 2×13213400340² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 347760 + ... + 383879.

It is an arithmetic number, because the mean of its divisors is an integer number (450690240).

Almost surely, 2^13213400340 is an apocalyptic number.

13213400340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13213400340 is an abundant number, since it is smaller than the sum of its proper divisors (30052862700).

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

13213400340 is a wasteful number, since it uses less digits than its factorization.

13213400340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731701 (or 731699 counting only the distinct ones).

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

Adding to 13213400340 its reverse (4300431231), we get a palindrome (17513831571).

The spelling of 13213400340 in words is "thirteen billion, two hundred thirteen million, four hundred thousand, three hundred forty".