31012054521211 has 8 divisors (see below), whose sum is σ = 31029673455648. Its totient is φ = 30994436616000.

The previous prime is 31012054521209. The next prime is 31012054521221. The reversal of 31012054521211 is 11212545021013.

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 31012054521211 - 2¹ = 31012054521209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31012054521211.

It is not an unprimeable number, because it can be changed into a prime (31012054521221) 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, 64655991 + ... + 65133871.

It is an arithmetic number, because the mean of its divisors is an integer number (3878709181956).

Almost surely, 2^{31012054521211} is an apocalyptic number.

31012054521211 is a deficient number, since it is larger than the sum of its proper divisors (17618934437).

31012054521211 is a wasteful number, since it uses less digits than its factorization.

31012054521211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514613.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 31012054521211 its reverse (11212545021013), we get a palindrome (42224599542224).

The spelling of 31012054521211 in words is "thirty-one trillion, twelve billion, fifty-four million, five hundred twenty-one thousand, two hundred eleven".