31144607 has 4 divisors (see below), whose sum is σ = 33540360. Its totient is φ = 28748856.

The previous prime is 31144601. The next prime is 31144609. The reversal of 31144607 is 70644113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70644113 = 4871 ⋅14503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31144607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197857 + ... + 1197882.

It is an arithmetic number, because the mean of its divisors is an integer number (8385090).

Almost surely, 2^31144607 is an apocalyptic number.

31144607 is a deficient number, since it is larger than the sum of its proper divisors (2395753).

31144607 is a wasteful number, since it uses less digits than its factorization.

31144607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395752.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 31144607 is about 5580.7353458124. The cubic root of 31144607 is about 314.6257653605.

The spelling of 31144607 in words is "thirty-one million, one hundred forty-four thousand, six hundred seven".