31144202025 has 12 divisors (see below), whose sum is σ = 51491747472. Its totient is φ = 16610241040.

The previous prime is 31144202021. The next prime is 31144202027. The reversal of 31144202025 is 52020244113.

It is not a de Polignac number, because 31144202025 - 2² = 31144202021 is a prime.

It is a super-2 number, since 2×31144202025² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31144201986 and 31144202004.

It is not an unprimeable number, because it can be changed into a prime (31144202021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207627939 + ... + 207628088.

It is an arithmetic number, because the mean of its divisors is an integer number (4290978956).

Almost surely, 2^31144202025 is an apocalyptic number.

It is an amenable number.

31144202025 is a deficient number, since it is larger than the sum of its proper divisors (20347545447).

31144202025 is a wasteful number, since it uses less digits than its factorization.

31144202025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415256040 (or 415256035 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 31144202025 its reverse (52020244113), we get a palindrome (83164446138).

The spelling of 31144202025 in words is "thirty-one billion, one hundred forty-four million, two hundred two thousand, twenty-five".