31030074 has 16 divisors (see below), whose sum is σ = 68955840. Its totient is φ = 10343340.

The previous prime is 31030073. The next prime is 31030081. The reversal of 31030074 is 47003013.

It is a super-3 number, since 3×31030074³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31030073) 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, 287262 + ... + 287369.

It is an arithmetic number, because the mean of its divisors is an integer number (4309740).

Almost surely, 2^31030074 is an apocalyptic number.

31030074 is an abundant number, since it is smaller than the sum of its proper divisors (37925766).

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

31030074 is a wasteful number, since it uses less digits than its factorization.

31030074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574642 (or 574636 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 31030074 is about 5570.4644330612. The cubic root of 31030074 is about 314.2396172258.

Adding to 31030074 its reverse (47003013), we get a palindrome (78033087).

The spelling of 31030074 in words is "thirty-one million, thirty thousand, seventy-four".