31212103123232 has 12 divisors (see below), whose sum is σ = 61448828023926. Its totient is φ = 15606051561600.

The previous prime is 31212103123231. The next prime is 31212103123283. The reversal of 31212103123232 is 23232130121213.

It can be written as a sum of positive squares in only one way, i.e., 30869180448016 + 342922675216 = 5556004^2 + 585596^2 .

It is not an unprimeable number, because it can be changed into a prime (31212103123231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487689111269 + ... + 487689111332.

Almost surely, 2^{31212103123232} is an apocalyptic number.

31212103123232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31212103123232 is a deficient number, since it is larger than the sum of its proper divisors (30236724900694).

31212103123232 is an equidigital number, since it uses as much as digits as its factorization.

31212103123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975378222611 (or 975378222603 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31212103123232 its reverse (23232130121213), we get a palindrome (54444233244445).

The spelling of 31212103123232 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred twenty-three thousand, two hundred thirty-two".