31383074 has 4 divisors (see below), whose sum is σ = 47074614. Its totient is φ = 15691536.

The previous prime is 31383073. The next prime is 31383083. The reversal of 31383074 is 47038313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47038313 = 7 ⋅6719759.

It can be written as a sum of positive squares in only one way, i.e., 28015849 + 3367225 = 5293^2 + 1835^2 .

It is not an unprimeable number, because it can be changed into a prime (31383073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7845767 + ... + 7845770.

Almost surely, 2^31383074 is an apocalyptic number.

31383074 is a deficient number, since it is larger than the sum of its proper divisors (15691540).

31383074 is a wasteful number, since it uses less digits than its factorization.

31383074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15691539.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 31383074 is about 5602.0597997522. The cubic root of 31383074 is about 315.4267299547.

The spelling of 31383074 in words is "thirty-one million, three hundred eighty-three thousand, seventy-four".