31213031202011 has 8 divisors (see below), whose sum is σ = 32291116237200. Its totient is φ = 30135064407840.

The previous prime is 31213031201993. The next prime is 31213031202047. The reversal of 31213031202011 is 11020213031213.

It is a happy number.

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 31213031202011 - 2²² = 31213027007707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31213031202061) 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, 29023016 + ... + 30079253.

It is an arithmetic number, because the mean of its divisors is an integer number (4036389529650).

Almost surely, 2^{31213031202011} is an apocalyptic number.

31213031202011 is a deficient number, since it is larger than the sum of its proper divisors (1078085035189).

31213031202011 is a wasteful number, since it uses less digits than its factorization.

31213031202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59120509.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31213031202011 its reverse (11020213031213), we get a palindrome (42233244233224).

The spelling of 31213031202011 in words is "thirty-one trillion, two hundred thirteen billion, thirty-one million, two hundred two thousand, eleven".