31230030031131 has 8 divisors (see below), whose sum is σ = 41641006497040. Its totient is φ = 20819536792992.

The previous prime is 31230030031121. The next prime is 31230030031133. The reversal of 31230030031131 is 13113003003213.

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

It is not a de Polignac number, because 31230030031131 - 2¹¹ = 31230030029083 is a prime.

It is a super-2 number, since 2×31230030031131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31230030031098 and 31230030031107.

It is not an unprimeable number, because it can be changed into a prime (31230030031133) 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, 120656116 + ... + 120914673.

It is an arithmetic number, because the mean of its divisors is an integer number (5205125812130).

Almost surely, 2^{31230030031131} is an apocalyptic number.

31230030031131 is a deficient number, since it is larger than the sum of its proper divisors (10410976465909).

31230030031131 is a wasteful number, since it uses less digits than its factorization.

31230030031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241613885.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31230030031131 its reverse (13113003003213), we get a palindrome (44343033034344).

The spelling of 31230030031131 in words is "thirty-one trillion, two hundred thirty billion, thirty million, thirty-one thousand, one hundred thirty-one".