31053222 has 12 divisors (see below), whose sum is σ = 67282020. Its totient is φ = 10351068.

The previous prime is 31053221. The next prime is 31053233. The reversal of 31053222 is 22235013.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1725179 = 31053222 / (3 + 1 + 0 + 5 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 31053195 and 31053204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31053221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 862572 + ... + 862607.

It is an arithmetic number, because the mean of its divisors is an integer number (5606835).

Almost surely, 2^31053222 is an apocalyptic number.

31053222 is an abundant number, since it is smaller than the sum of its proper divisors (36228798).

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

31053222 is a wasteful number, since it uses less digits than its factorization.

31053222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725187 (or 1725184 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 31053222 is about 5572.5417898837. The cubic root of 31053222 is about 314.3177372526.

Adding to 31053222 its reverse (22235013), we get a palindrome (53288235).

The spelling of 31053222 in words is "thirty-one million, fifty-three thousand, two hundred twenty-two".