31220501422 has 8 divisors (see below), whose sum is σ = 51088093272. Its totient is φ = 14191137000.

The previous prime is 31220501387. The next prime is 31220501423. The reversal of 31220501422 is 22410502213.

It is a happy number.

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

It is a super-2 number, since 2×31220501422² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1419113701 = 31220501422 / (3 + 1 + 2 + 2 + 0 + 5 + 0 + 1 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 31220501393 and 31220501402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220501423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709556829 + ... + 709556872.

It is an arithmetic number, because the mean of its divisors is an integer number (6386011659).

Almost surely, 2^31220501422 is an apocalyptic number.

31220501422 is a deficient number, since it is larger than the sum of its proper divisors (19867591850).

31220501422 is a wasteful number, since it uses less digits than its factorization.

31220501422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419113714.

The product of its (nonzero) digits is 960, while the sum is 22.

The spelling of 31220501422 in words is "thirty-one billion, two hundred twenty million, five hundred one thousand, four hundred twenty-two".