31030021010 has 8 divisors (see below), whose sum is σ = 55854037836. Its totient is φ = 12412008400.

The previous prime is 31030021007. The next prime is 31030021039. The reversal of 31030021010 is 1012003013.

It can be written as a sum of positive squares in 2 ways, for example, as 25362792049 + 5667228961 = 159257^2 + 75281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31030020982 and 31030021000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551501041 + ... + 1551501060.

Almost surely, 2^31030021010 is an apocalyptic number.

31030021010 is a deficient number, since it is larger than the sum of its proper divisors (24824016826).

31030021010 is a wasteful number, since it uses less digits than its factorization.

31030021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103002108.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 31030021010 its reverse (1012003013), we get a palindrome (32042024023).

The spelling of 31030021010 in words is "thirty-one billion, thirty million, twenty-one thousand, ten".