31540321030 has 16 divisors (see below), whose sum is σ = 57491219520. Its totient is φ = 12456430272.

The previous prime is 31540321013. The next prime is 31540321031. The reversal of 31540321030 is 3012304513.

It is a junction number, because it is equal to n+sod(n) for n = 31540320992 and 31540321010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31540321031) 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, 19961439 + ... + 19963018.

It is an arithmetic number, because the mean of its divisors is an integer number (3593201220).

Almost surely, 2^31540321030 is an apocalyptic number.

31540321030 is a deficient number, since it is larger than the sum of its proper divisors (25950898490).

31540321030 is a wasteful number, since it uses less digits than its factorization.

31540321030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39924543.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 31540321030 its reverse (3012304513), we get a palindrome (34552625543).

The spelling of 31540321030 in words is "thirty-one billion, five hundred forty million, three hundred twenty-one thousand, thirty".