20131254611 has 8 divisors (see below), whose sum is σ = 21681476544. Its totient is φ = 18581270400.

The previous prime is 20131254589. The next prime is 20131254613. The reversal of 20131254611 is 11645213102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20131254611 is a prime.

It is a super-2 number, since 2×20131254611² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20131254613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141686 + ... + 245636.

It is an arithmetic number, because the mean of its divisors is an integer number (2710184568).

Almost surely, 2^20131254611 is an apocalyptic number.

20131254611 is a deficient number, since it is larger than the sum of its proper divisors (1550221933).

20131254611 is a wasteful number, since it uses less digits than its factorization.

20131254611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118861.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 20131254611 its reverse (11645213102), we get a palindrome (31776467713).

The spelling of 20131254611 in words is "twenty billion, one hundred thirty-one million, two hundred fifty-four thousand, six hundred eleven".