31321131001 has 8 divisors (see below), whose sum is σ = 33040219680. Its totient is φ = 29609103168.

The previous prime is 31321130999. The next prime is 31321131013. The reversal of 31321131001 is 10013112313.

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 31321131001 - 2¹ = 31321130999 is a prime.

It is a super-3 number, since 3×31321131001³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31321131301) 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, 1756096 + ... + 1773841.

It is an arithmetic number, because the mean of its divisors is an integer number (4130027460).

Almost surely, 2^31321131001 is an apocalyptic number.

It is an amenable number.

31321131001 is a deficient number, since it is larger than the sum of its proper divisors (1719088679).

31321131001 is a wasteful number, since it uses less digits than its factorization.

31321131001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530423.

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

Adding to 31321131001 its reverse (10013112313), we get a palindrome (41334243314).

The spelling of 31321131001 in words is "thirty-one billion, three hundred twenty-one million, one hundred thirty-one thousand, one".