31031133231031 has 8 divisors (see below), whose sum is σ = 32383484302464. Its totient is φ = 29679046440120.

The previous prime is 31031133231029. The next prime is 31031133231097. The reversal of 31031133231031 is 13013233113013.

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 31031133231031 - 2¹ = 31031133231029 is a prime.

It is a super-2 number, since 2×31031133231031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31031133230987 and 31031133231005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031133231431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65830161 + ... + 66299866.

It is an arithmetic number, because the mean of its divisors is an integer number (4047935537808).

Almost surely, 2^{31031133231031} is an apocalyptic number.

31031133231031 is a deficient number, since it is larger than the sum of its proper divisors (1352351071433).

31031133231031 is a wasteful number, since it uses less digits than its factorization.

31031133231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132140261.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 31031133231031 its reverse (13013233113013), we get a palindrome (44044366344044).

The spelling of 31031133231031 in words is "thirty-one trillion, thirty-one billion, one hundred thirty-three million, two hundred thirty-one thousand, thirty-one".