31012213241 has 8 divisors (see below), whose sum is σ = 31047198600. Its totient is φ = 30977251200.

The previous prime is 31012213187. The next prime is 31012213261. The reversal of 31012213241 is 14231221013.

It can be written as a sum of positive squares in 4 ways, for example, as 5629350841 + 25382862400 = 75029^2 + 159320^2 .

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 31012213241 - 2³⁰ = 29938471417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31012213261) 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, 4082675 + ... + 4090263.

It is an arithmetic number, because the mean of its divisors is an integer number (3880899825).

Almost surely, 2^31012213241 is an apocalyptic number.

It is an amenable number.

31012213241 is a deficient number, since it is larger than the sum of its proper divisors (34985359).

31012213241 is a wasteful number, since it uses less digits than its factorization.

31012213241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11659.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31012213241 its reverse (14231221013), we get a palindrome (45243434254).

The spelling of 31012213241 in words is "thirty-one billion, twelve million, two hundred thirteen thousand, two hundred forty-one".