31203331130040 has 32 divisors (see below), whose sum is σ = 93609993390480. Its totient is φ = 8320888301312.

The previous prime is 31203331130039. The next prime is 31203331130057. The reversal of 31203331130040 is 4003113330213.

It is a happy number.

It is a super-2 number, since 2×31203331130040² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130013879589 + ... + 130013879828.

Almost surely, 2^{31203331130040} is an apocalyptic number.

31203331130040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31203331130040 is an abundant number, since it is smaller than the sum of its proper divisors (62406662260440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31203331130040 is a wasteful number, since it uses less digits than its factorization.

31203331130040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260027759431 (or 260027759427 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31203331130040 its reverse (4003113330213), we get a palindrome (35206444460253).

The spelling of 31203331130040 in words is "thirty-one trillion, two hundred three billion, three hundred thirty-one million, one hundred thirty thousand, forty".