31402122 has 24 divisors (see below), whose sum is σ = 64564416. Its totient is φ = 10181808.

The previous prime is 31402121. The next prime is 31402123. The reversal of 31402122 is 22120413.

It is an interprime number because it is at equal distance from previous prime (31402121) and next prime (31402123).

It is a super-2 number, since 2×31402122² = 1972186532205768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31402121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6303 + ... + 10125.

It is an arithmetic number, because the mean of its divisors is an integer number (2690184).

Almost surely, 2^31402122 is an apocalyptic number.

31402122 is an abundant number, since it is smaller than the sum of its proper divisors (33162294).

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

31402122 is a wasteful number, since it uses less digits than its factorization.

31402122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902 (or 3865 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 31402122 is about 5603.7596308193. The cubic root of 31402122 is about 315.4905332773.

Adding to 31402122 its reverse (22120413), we get a palindrome (53522535).

The spelling of 31402122 in words is "thirty-one million, four hundred two thousand, one hundred twenty-two".