310021021012 has 6 divisors (see below), whose sum is σ = 542536786778. Its totient is φ = 155010510504.

The previous prime is 310021021003. The next prime is 310021021027. The reversal of 310021021012 is 210120120013.

It can be written as a sum of positive squares in only one way, i.e., 299237444676 + 10783576336 = 547026^2 + 103844^2 .

It is a super-2 number, since 2×310021021012² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 310021020983 and 310021021001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38752627623 + ... + 38752627630.

Almost surely, 2^310021021012 is an apocalyptic number.

It is an amenable number.

310021021012 is a deficient number, since it is larger than the sum of its proper divisors (232515765766).

310021021012 is a wasteful number, since it uses less digits than its factorization.

310021021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77505255257 (or 77505255255 counting only the distinct ones).

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

Adding to 310021021012 its reverse (210120120013), we get a palindrome (520141141025).

Subtracting from 310021021012 its reverse (210120120013), we obtain a palindrome (99900900999).

The spelling of 310021021012 in words is "three hundred ten billion, twenty-one million, twenty-one thousand, twelve".