31545034 has 4 divisors (see below), whose sum is σ = 47317554. Its totient is φ = 15772516.

The previous prime is 31545023. The next prime is 31545049. The reversal of 31545034 is 43054513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43054513 = 19 ⋅2266027.

It can be written as a sum of positive squares in only one way, i.e., 19316025 + 12229009 = 4395^2 + 3497^2 .

It is a super-2 number, since 2×31545034² = 1990178340122312, which contains 22 as substring.

It is an unprimeable number.

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, 7886257 + ... + 7886260.

Almost surely, 2^31545034 is an apocalyptic number.

31545034 is a deficient number, since it is larger than the sum of its proper divisors (15772520).

31545034 is a wasteful number, since it uses less digits than its factorization.

31545034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15772519.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 31545034 is about 5616.4965948534. The cubic root of 31545034 is about 315.9684113593.

Adding to 31545034 its reverse (43054513), we get a palindrome (74599547).

The spelling of 31545034 in words is "thirty-one million, five hundred forty-five thousand, thirty-four".