31148603 has 4 divisors (see below), whose sum is σ = 31434480. Its totient is φ = 30862728.

The previous prime is 31148591. The next prime is 31148609. The reversal of 31148603 is 30684113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31148603 - 2¹⁶ = 31083067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31148609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142775 + ... + 142992.

It is an arithmetic number, because the mean of its divisors is an integer number (7858620).

Almost surely, 2^31148603 is an apocalyptic number.

31148603 is a deficient number, since it is larger than the sum of its proper divisors (285877).

31148603 is a wasteful number, since it uses less digits than its factorization.

31148603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285876.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 31148603 is about 5581.0933516651. The cubic root of 31148603 is about 314.6392207750.

The spelling of 31148603 in words is "thirty-one million, one hundred forty-eight thousand, six hundred three".