31230011131 has 8 divisors (see below), whose sum is σ = 34406422128. Its totient is φ = 28109820000.

The previous prime is 31230011119. The next prime is 31230011191. The reversal of 31230011131 is 13111003213.

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

It is a cyclic number.

It is not a de Polignac number, because 31230011131 - 2¹⁹ = 31229486843 is a prime.

It is a super-2 number, since 2×31230011131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31230011191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14053800 + ... + 14056021.

It is an arithmetic number, because the mean of its divisors is an integer number (4300802766).

Almost surely, 2^31230011131 is an apocalyptic number.

31230011131 is a deficient number, since it is larger than the sum of its proper divisors (3176410997).

31230011131 is a wasteful number, since it uses less digits than its factorization.

31230011131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28109933.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31230011131 its reverse (13111003213), we get a palindrome (44341014344).

The spelling of 31230011131 in words is "thirty-one billion, two hundred thirty million, eleven thousand, one hundred thirty-one".