31213031201102 has 32 divisors (see below), whose sum is σ = 47942995469760. Its totient is φ = 15236578506240.

The previous prime is 31213031201101. The next prime is 31213031201129. The reversal of 31213031201102 is 20110213031213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213031201101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16648424 + ... + 18428132.

It is an arithmetic number, because the mean of its divisors is an integer number (1498218608430).

Almost surely, 2^{31213031201102} is an apocalyptic number.

31213031201102 is a deficient number, since it is larger than the sum of its proper divisors (16729964268658).

31213031201102 is a wasteful number, since it uses less digits than its factorization.

31213031201102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780988.

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

Adding to 31213031201102 its reverse (20110213031213), we get a palindrome (51323244232315).

The spelling of 31213031201102 in words is "thirty-one trillion, two hundred thirteen billion, thirty-one million, two hundred one thousand, one hundred two".