31231203022201 has 24 divisors (see below), whose sum is σ = 39127091290560. Its totient is φ = 24708957652512.

The previous prime is 31231203022199. The next prime is 31231203022219. The reversal of 31231203022201 is 10222030213213.

It is not a de Polignac number, because 31231203022201 - 2¹ = 31231203022199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31231203022241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9536190 + ... + 12385528.

It is an arithmetic number, because the mean of its divisors is an integer number (1630295470440).

Almost surely, 2^{31231203022201} is an apocalyptic number.

It is an amenable number.

31231203022201 is a deficient number, since it is larger than the sum of its proper divisors (7895888268359).

31231203022201 is a wasteful number, since it uses less digits than its factorization.

31231203022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866573 (or 2866566 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31231203022201 its reverse (10222030213213), we get a palindrome (41453233235414).

The spelling of 31231203022201 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred three million, twenty-two thousand, two hundred one".