31431320303101 has 8 divisors (see below), whose sum is σ = 31458430110240. Its totient is φ = 31404213902448.

The previous prime is 31431320303087. The next prime is 31431320303137. The reversal of 31431320303101 is 10130302313413.

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 31431320303101 - 2¹¹ = 31431320301053 is a prime.

It is a super-2 number, since 2×31431320303101² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31431320303161) 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, 17785830 + ... + 19473016.

It is an arithmetic number, because the mean of its divisors is an integer number (3932303763780).

Almost surely, 2^{31431320303101} is an apocalyptic number.

It is an amenable number.

31431320303101 is a deficient number, since it is larger than the sum of its proper divisors (27109807139).

31431320303101 is a wasteful number, since it uses less digits than its factorization.

31431320303101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703243.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31431320303101 its reverse (10130302313413), we get a palindrome (41561622616514).

The spelling of 31431320303101 in words is "thirty-one trillion, four hundred thirty-one billion, three hundred twenty million, three hundred three thousand, one hundred one".