31203110042431 has 8 divisors (see below), whose sum is σ = 32000837742720. Its totient is φ = 30408658432152.

The previous prime is 31203110042417. The next prime is 31203110042459. The reversal of 31203110042431 is 13424001130213.

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 31203110042431 - 2⁵ = 31203110042399 is a prime.

It is a super-2 number, since 2×31203110042431² (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 = 31203110042396 and 31203110042405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203110048431) 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, 819003211 + ... + 819041308.

It is an arithmetic number, because the mean of its divisors is an integer number (4000104717840).

Almost surely, 2^{31203110042431} is an apocalyptic number.

31203110042431 is a deficient number, since it is larger than the sum of its proper divisors (797727700289).

31203110042431 is a wasteful number, since it uses less digits than its factorization.

31203110042431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638045005.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31203110042431 its reverse (13424001130213), we get a palindrome (44627111172644).

The spelling of 31203110042431 in words is "thirty-one trillion, two hundred three billion, one hundred ten million, forty-two thousand, four hundred thirty-one".