31344130 has 8 divisors (see below), whose sum is σ = 56419452. Its totient is φ = 12537648.

The previous prime is 31344121. The next prime is 31344139. The reversal of 31344130 is 3144313.

It is an interprime number because it is at equal distance from previous prime (31344121) and next prime (31344139).

It can be written as a sum of positive squares in 2 ways, for example, as 29713401 + 1630729 = 5451^2 + 1277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×31344130³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31344098 and 31344107.

It is not an unprimeable number, because it can be changed into a prime (31344139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1567197 + ... + 1567216.

Almost surely, 2^31344130 is an apocalyptic number.

31344130 is a deficient number, since it is larger than the sum of its proper divisors (25075322).

31344130 is a wasteful number, since it uses less digits than its factorization.

31344130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134420.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 31344130 is about 5598.5828564021. The cubic root of 31344130 is about 315.2962024476.

Adding to 31344130 its reverse (3144313), we get a palindrome (34488443).

The spelling of 31344130 in words is "thirty-one million, three hundred forty-four thousand, one hundred thirty".