31000342 has 4 divisors (see below), whose sum is σ = 46500516. Its totient is φ = 15500170.

The previous prime is 31000337. The next prime is 31000349. The reversal of 31000342 is 24300013.

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

It is a super-2 number, since 2×31000342² = 1922042408233928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7750084 + ... + 7750087.

It is an arithmetic number, because the mean of its divisors is an integer number (11625129).

Almost surely, 2^31000342 is an apocalyptic number.

31000342 is a deficient number, since it is larger than the sum of its proper divisors (15500174).

31000342 is a wasteful number, since it uses less digits than its factorization.

31000342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15500173.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 31000342 is about 5567.7950752520. The cubic root of 31000342 is about 314.1392204523.

Adding to 31000342 its reverse (24300013), we get a palindrome (55300355).

The spelling of 31000342 in words is "thirty-one million, three hundred forty-two", and thus it is an aban number.