21031300010 has 32 divisors (see below), whose sum is σ = 43973649792. Its totient is φ = 7092521280.

The previous prime is 21031300009. The next prime is 21031300019. The reversal of 21031300010 is 1000313012.

It is a super-2 number, since 2×21031300010² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21031299964 and 21031300000.

It is not an unprimeable number, because it can be changed into a prime (21031300019) 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, 2458412 + ... + 2466951.

It is an arithmetic number, because the mean of its divisors is an integer number (1374176556).

Almost surely, 2^21031300010 is an apocalyptic number.

21031300010 is an abundant number, since it is smaller than the sum of its proper divisors (22942349782).

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

21031300010 is a wasteful number, since it uses less digits than its factorization.

21031300010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925438.

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

Adding to 21031300010 its reverse (1000313012), we get a palindrome (22031613022).

The spelling of 21031300010 in words is "twenty-one billion, thirty-one million, three hundred thousand, ten".