31203432452 has 6 divisors (see below), whose sum is σ = 54606006798. Its totient is φ = 15601716224.

The previous prime is 31203432451. The next prime is 31203432521. The reversal of 31203432452 is 25423430213.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27095135236 + 4108297216 = 164606^2 + 64096^2 .

It is not an unprimeable number, because it can be changed into a prime (31203432451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900429053 + ... + 3900429060.

It is an arithmetic number, because the mean of its divisors is an integer number (9101001133).

Almost surely, 2^31203432452 is an apocalyptic number.

It is an amenable number.

31203432452 is a deficient number, since it is larger than the sum of its proper divisors (23402574346).

31203432452 is a wasteful number, since it uses less digits than its factorization.

31203432452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800858117 (or 7800858115 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 31203432452 its reverse (25423430213), we get a palindrome (56626862665).

The spelling of 31203432452 in words is "thirty-one billion, two hundred three million, four hundred thirty-two thousand, four hundred fifty-two".