31349142 has 24 divisors (see below), whose sum is σ = 74098440. Its totient is φ = 9499680.

The previous prime is 31349083. The next prime is 31349167. The reversal of 31349142 is 24194313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78967 + ... + 79362.

It is an arithmetic number, because the mean of its divisors is an integer number (3087435).

Almost surely, 2^31349142 is an apocalyptic number.

31349142 is an abundant number, since it is smaller than the sum of its proper divisors (42749298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31349142 is a wasteful number, since it uses less digits than its factorization.

31349142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158348 (or 158345 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 31349142 is about 5599.0304517836. The cubic root of 31349142 is about 315.3130070864.

It can be divided in two parts, 313 and 49142, that added together give a triangular number (49455 = T₃₁₄).

The spelling of 31349142 in words is "thirty-one million, three hundred forty-nine thousand, one hundred forty-two".