20131346652 has 24 divisors (see below), whose sum is σ = 47146482432. Its totient is φ = 6685686000.

The previous prime is 20131346629. The next prime is 20131346681. The reversal of 20131346652 is 25664313102.

It is a super-2 number, since 2×20131346652² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3091974 + ... + 3098477.

It is an arithmetic number, because the mean of its divisors is an integer number (1964436768).

Almost surely, 2^20131346652 is an apocalyptic number.

It is an amenable number.

20131346652 is an abundant number, since it is smaller than the sum of its proper divisors (27015135780).

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

20131346652 is a wasteful number, since it uses less digits than its factorization.

20131346652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6190729 (or 6190727 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 20131346652 its reverse (25664313102), we get a palindrome (45795659754).

The spelling of 20131346652 in words is "twenty billion, one hundred thirty-one million, three hundred forty-six thousand, six hundred fifty-two".