31345046 has 4 divisors (see below), whose sum is σ = 47017572. Its totient is φ = 15672522.

The previous prime is 31345019. The next prime is 31345049. The reversal of 31345046 is 64054313.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31345049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7836260 + ... + 7836263.

It is an arithmetic number, because the mean of its divisors is an integer number (11754393).

Almost surely, 2^31345046 is an apocalyptic number.

31345046 is a deficient number, since it is larger than the sum of its proper divisors (15672526).

31345046 is a wasteful number, since it uses less digits than its factorization.

31345046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15672525.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 31345046 is about 5598.6646622208. The cubic root of 31345046 is about 315.2992738202.

Adding to 31345046 its reverse (64054313), we get a palindrome (95399359).

The spelling of 31345046 in words is "thirty-one million, three hundred forty-five thousand, forty-six".