31340450 has 12 divisors (see below), whose sum is σ = 58293330. Its totient is φ = 12536160.

The previous prime is 31340447. The next prime is 31340453. The reversal of 31340450 is 5404313.

It is an interprime number because it is at equal distance from previous prime (31340447) and next prime (31340453).

It can be written as a sum of positive squares in 3 ways, for example, as 13388281 + 17952169 = 3659^2 + 4237^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31340453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 313355 + ... + 313454.

Almost surely, 2^31340450 is an apocalyptic number.

31340450 is a deficient number, since it is larger than the sum of its proper divisors (26952880).

31340450 is a wasteful number, since it uses less digits than its factorization.

31340450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626821 (or 626816 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 31340450 is about 5598.2541921567. The cubic root of 31340450 is about 315.2838627056.

Adding to 31340450 its reverse (5404313), we get a palindrome (36744763).

The spelling of 31340450 in words is "thirty-one million, three hundred forty thousand, four hundred fifty".