31444402202 has 4 divisors (see below), whose sum is σ = 47166603306. Its totient is φ = 15722201100.

The previous prime is 31444402139. The next prime is 31444402217. The reversal of 31444402202 is 20220444413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29134734721 + 2309667481 = 170689^2 + 48059^2 .

It is a super-2 number, since 2×31444402202² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7861100549 + ... + 7861100552.

Almost surely, 2^31444402202 is an apocalyptic number.

31444402202 is a deficient number, since it is larger than the sum of its proper divisors (15722201104).

31444402202 is a wasteful number, since it uses less digits than its factorization.

31444402202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15722201103.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 31444402202 its reverse (20220444413), we get a palindrome (51664846615).

The spelling of 31444402202 in words is "thirty-one billion, four hundred forty-four million, four hundred two thousand, two hundred two".