31203230132 has 6 divisors (see below), whose sum is σ = 54605652738. Its totient is φ = 15601615064.

The previous prime is 31203230131. The next prime is 31203230153. The reversal of 31203230132 is 23103230213.

It can be written as a sum of positive squares in only one way, i.e., 30742011556 + 461218576 = 175334^2 + 21476^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203230131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900403763 + ... + 3900403770.

It is an arithmetic number, because the mean of its divisors is an integer number (9100942123).

Almost surely, 2^31203230132 is an apocalyptic number.

It is an amenable number.

31203230132 is a deficient number, since it is larger than the sum of its proper divisors (23402422606).

31203230132 is a wasteful number, since it uses less digits than its factorization.

31203230132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800807537 (or 7800807535 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31203230132 its reverse (23103230213), we get a palindrome (54306460345).

The spelling of 31203230132 in words is "thirty-one billion, two hundred three million, two hundred thirty thousand, one hundred thirty-two".