31148134 has 4 divisors (see below), whose sum is σ = 46722204. Its totient is φ = 15574066.

The previous prime is 31148123. The next prime is 31148137. The reversal of 31148134 is 43184113.

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

It is a junction number, because it is equal to n+sod(n) for n = 31148099 and 31148108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31148137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7787032 + ... + 7787035.

It is an arithmetic number, because the mean of its divisors is an integer number (11680551).

Almost surely, 2^31148134 is an apocalyptic number.

31148134 is a deficient number, since it is larger than the sum of its proper divisors (15574070).

31148134 is a wasteful number, since it uses less digits than its factorization.

31148134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15574069.

The product of its digits is 1152, while the sum is 25.

The square root of 31148134 is about 5581.0513346501. The cubic root of 31148134 is about 314.6376416080.

The spelling of 31148134 in words is "thirty-one million, one hundred forty-eight thousand, one hundred thirty-four".