31000002030 has 24 divisors (see below), whose sum is σ = 80600005512. Its totient is φ = 8266667184.

The previous prime is 31000001987. The next prime is 31000002049. The reversal of 31000002030 is 3020000013.

It is a happy number.

It is a super-4 number, since 4×31000002030⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172222144 + ... + 172222323.

It is an arithmetic number, because the mean of its divisors is an integer number (3358333563).

Almost surely, 2^31000002030 is an apocalyptic number.

31000002030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31000002030 is an abundant number, since it is smaller than the sum of its proper divisors (49600003482).

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

31000002030 is a wasteful number, since it uses less digits than its factorization.

31000002030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344444480 (or 344444477 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

Adding to 31000002030 its reverse (3020000013), we get a palindrome (34020002043).

The spelling of 31000002030 in words is "thirty-one billion, two thousand, thirty".