31220201303432 has 8 divisors (see below), whose sum is σ = 58537877443950. Its totient is φ = 15610100651712.

The previous prime is 31220201303383. The next prime is 31220201303491. The reversal of 31220201303432 is 23430310202213.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23351761157956 + 7868440145476 = 4832366^2 + 2805074^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1951262581457 + ... + 1951262581472.

Almost surely, 2^{31220201303432} is an apocalyptic number.

It is an amenable number.

31220201303432 is a deficient number, since it is larger than the sum of its proper divisors (27317676140518).

31220201303432 is a wasteful number, since it uses less digits than its factorization.

31220201303432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902525162935 (or 3902525162931 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 31220201303432 its reverse (23430310202213), we get a palindrome (54650511505645).

The spelling of 31220201303432 in words is "thirty-one trillion, two hundred twenty billion, two hundred one million, three hundred three thousand, four hundred thirty-two".