31030020003000 has 128 divisors (see below), whose sum is σ = 96816198024000. Its totient is φ = 8274455283200.

The previous prime is 31030020002941. The next prime is 31030020003023. The reversal of 31030020003000 is 30002003013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 31 ways as a sum of consecutive naturals, for example, 137854546 + ... + 138079454.

Almost surely, 2^{31030020003000} is an apocalyptic number.

31030020003000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31030020003000 is an abundant number, since it is smaller than the sum of its proper divisors (65786178021000).

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

31030020003000 is a wasteful number, since it uses less digits than its factorization.

31030020003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270922 (or 270908 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 31030020003000 its reverse (30002003013), we get a palindrome (31060022006013).

The spelling of 31030020003000 in words is "thirty-one trillion, thirty billion, twenty million, three thousand".