31442000340 has 48 divisors (see below), whose sum is σ = 89529773760. Its totient is φ = 8242421760.

The previous prime is 31442000297. The next prime is 31442000347. The reversal of 31442000340 is 4300024413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442000347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4437421 + ... + 4444500.

It is an arithmetic number, because the mean of its divisors is an integer number (1865203620).

Almost surely, 2^31442000340 is an apocalyptic number.

31442000340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31442000340 is an abundant number, since it is smaller than the sum of its proper divisors (58087773420).

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

31442000340 is a wasteful number, since it uses less digits than its factorization.

31442000340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8881992 (or 8881990 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 31442000340 its reverse (4300024413), we get a palindrome (35742024753).

The spelling of 31442000340 in words is "thirty-one billion, four hundred forty-two million, three hundred forty", and thus it is an aban number.