31030022 has 4 divisors (see below), whose sum is σ = 46545036. Its totient is φ = 15515010.

The previous prime is 31030001. The next prime is 31030067. The reversal of 31030022 is 22003013.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 31029985 and 31030012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7757504 + ... + 7757507.

It is an arithmetic number, because the mean of its divisors is an integer number (11636259).

Almost surely, 2^31030022 is an apocalyptic number.

31030022 is a deficient number, since it is larger than the sum of its proper divisors (15515014).

31030022 is a wasteful number, since it uses less digits than its factorization.

31030022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15515013.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 31030022 is about 5570.4597655849. The cubic root of 31030022 is about 314.2394416921.

Adding to 31030022 its reverse (22003013), we get a palindrome (53033035).

The spelling of 31030022 in words is "thirty-one million, thirty thousand, twenty-two".