31220220430130 has 16 divisors (see below), whose sum is σ = 57503289723264. Its totient is φ = 12197667516720.

The previous prime is 31220220430109. The next prime is 31220220430153. The reversal of 31220220430130 is 3103402202213.

It is a junction number, because it is equal to n+sod(n) for n = 31220220430096 and 31220220430105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36302581466 + ... + 36302582325.

It is an arithmetic number, because the mean of its divisors is an integer number (3593955607704).

Almost surely, 2^{31220220430130} is an apocalyptic number.

31220220430130 is a deficient number, since it is larger than the sum of its proper divisors (26283069293134).

31220220430130 is a wasteful number, since it uses less digits than its factorization.

31220220430130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72605163841.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31220220430130 its reverse (3103402202213), we get a palindrome (34323622632343).

The spelling of 31220220430130 in words is "thirty-one trillion, two hundred twenty billion, two hundred twenty million, four hundred thirty thousand, one hundred thirty".