31222485 has 24 divisors (see below), whose sum is σ = 61850880. Its totient is φ = 14272992.

The previous prime is 31222481. The next prime is 31222507. The reversal of 31222485 is 58422213.

It is not a de Polignac number, because 31222485 - 2² = 31222481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49245 + ... + 49874.

It is an arithmetic number, because the mean of its divisors is an integer number (2577120).

Almost surely, 2^31222485 is an apocalyptic number.

31222485 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31222485 is a deficient number, since it is larger than the sum of its proper divisors (30628395).

31222485 is a wasteful number, since it uses less digits than its factorization.

31222485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99137 (or 99134 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 31222485 is about 5587.7083853759. The cubic root of 31222485 is about 314.8877907214.

Adding to 31222485 its reverse (58422213), we get a palindrome (89644698).

The spelling of 31222485 in words is "thirty-one million, two hundred twenty-two thousand, four hundred eighty-five".