31162030 has 16 divisors (see below), whose sum is σ = 57043440. Its totient is φ = 12253312.

The previous prime is 31161997. The next prime is 31162031. The reversal of 31162030 is 3026113.

It is a super-2 number, since 2×31162030² = 1942144227441800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31161995 and 31162013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31162031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25819 + ... + 26998.

It is an arithmetic number, because the mean of its divisors is an integer number (3565215).

Almost surely, 2^31162030 is an apocalyptic number.

31162030 is a deficient number, since it is larger than the sum of its proper divisors (25881410).

31162030 is a wasteful number, since it uses less digits than its factorization.

31162030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52883.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 31162030 is about 5582.2961225646. The cubic root of 31162030 is about 314.6844240214.

Adding to 31162030 its reverse (3026113), we get a palindrome (34188143).

The spelling of 31162030 in words is "thirty-one million, one hundred sixty-two thousand, thirty".