31545421230 has 32 divisors (see below), whose sum is σ = 75726296064. Its totient is φ = 8410191776.

The previous prime is 31545421217. The next prime is 31545421241. The reversal of 31545421230 is 3212454513.

It is a super-2 number, since 2×31545421230² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16087 + ... + 251693.

It is an arithmetic number, because the mean of its divisors is an integer number (2366446752).

Almost surely, 2^31545421230 is an apocalyptic number.

31545421230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31545421230 is an abundant number, since it is smaller than the sum of its proper divisors (44180874834).

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

31545421230 is a wasteful number, since it uses less digits than its factorization.

31545421230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240080.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 31545421230 its reverse (3212454513), we get a palindrome (34757875743).

The spelling of 31545421230 in words is "thirty-one billion, five hundred forty-five million, four hundred twenty-one thousand, two hundred thirty".