31000101213 has 8 divisors (see below), whose sum is σ = 41340920608. Its totient is φ = 20663007984.

The previous prime is 31000101179. The next prime is 31000101257. The reversal of 31000101213 is 31210100013.

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

It is not a de Polignac number, because 31000101213 - 2¹⁸ = 30999839069 is a prime.

It is a super-2 number, since 2×31000101213² (a number of 22 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 (31000101113) 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, 912070 + ... + 945447.

It is an arithmetic number, because the mean of its divisors is an integer number (5167615076).

Almost surely, 2^31000101213 is an apocalyptic number.

It is an amenable number.

31000101213 is a deficient number, since it is larger than the sum of its proper divisors (10340819395).

31000101213 is a wasteful number, since it uses less digits than its factorization.

31000101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863083.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 31000101213 its reverse (31210100013), we get a palindrome (62210201226).

The spelling of 31000101213 in words is "thirty-one billion, one hundred one thousand, two hundred thirteen".