31020223212130 has 8 divisors (see below), whose sum is σ = 55836401781852. Its totient is φ = 12408089284848.

The previous prime is 31020223212089. The next prime is 31020223212151. The reversal of 31020223212130 is 3121232202013.

It can be written as a sum of positive squares in 2 ways, for example, as 29931282960601 + 1088940251529 = 5470949^2 + 1043523^2 .

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

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, 1551011160597 + ... + 1551011160616.

Almost surely, 2^{31020223212130} is an apocalyptic number.

31020223212130 is a deficient number, since it is larger than the sum of its proper divisors (24816178569722).

31020223212130 is a wasteful number, since it uses less digits than its factorization.

31020223212130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102022321220.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31020223212130 its reverse (3121232202013), we get a palindrome (34141455414143).

The spelling of 31020223212130 in words is "thirty-one trillion, twenty billion, two hundred twenty-three million, two hundred twelve thousand, one hundred thirty".