31421101000 has 32 divisors (see below), whose sum is σ = 73525378680. Its totient is φ = 12568440000.

The previous prime is 31421100973. The next prime is 31421101007. The reversal of 31421101000 is 10112413.

It can be written as a sum of positive squares in 4 ways, for example, as 6388165476 + 25032935524 = 79926^2 + 158218^2 .

It is not an unprimeable number, because it can be changed into a prime (31421101007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15709551 + ... + 15711550.

Almost surely, 2^31421101000 is an apocalyptic number.

It is an amenable number.

31421101000 is an abundant number, since it is smaller than the sum of its proper divisors (42104277680).

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

31421101000 is a wasteful number, since it uses less digits than its factorization.

31421101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31421122 (or 31421108 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 31421101000 its reverse (10112413), we get a palindrome (31431213413).

The spelling of 31421101000 in words is "thirty-one billion, four hundred twenty-one million, one hundred one thousand".