31220303201230 has 128 divisors (see below), whose sum is σ = 68901273907200. Its totient is φ = 10022502504960.

The previous prime is 31220303201209. The next prime is 31220303201239. The reversal of 31220303201230 is 3210230302213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220303201239) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 248223739 + ... + 248349481.

It is an arithmetic number, because the mean of its divisors is an integer number (538291202400).

Almost surely, 2^{31220303201230} is an apocalyptic number.

31220303201230 is an abundant number, since it is smaller than the sum of its proper divisors (37680970705970).

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

31220303201230 is a wasteful number, since it uses less digits than its factorization.

31220303201230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133346.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31220303201230 its reverse (3210230302213), we get a palindrome (34430533503443).

The spelling of 31220303201230 in words is "thirty-one trillion, two hundred twenty billion, three hundred three million, two hundred one thousand, two hundred thirty".