31368525338 has 4 divisors (see below), whose sum is σ = 47052788010. Its totient is φ = 15684262668.

The previous prime is 31368525329. The next prime is 31368525389. The reversal of 31368525338 is 83352586313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83352586313 = 19 ⋅4386978227.

It can be written as a sum of positive squares in only one way, i.e., 23798307289 + 7570218049 = 154267^2 + 87007^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31368525292 and 31368525301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7842131333 + ... + 7842131336.

Almost surely, 2^31368525338 is an apocalyptic number.

31368525338 is a deficient number, since it is larger than the sum of its proper divisors (15684262672).

31368525338 is a wasteful number, since it uses less digits than its factorization.

31368525338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15684262671.

The product of its digits is 1555200, while the sum is 47.

The spelling of 31368525338 in words is "thirty-one billion, three hundred sixty-eight million, five hundred twenty-five thousand, three hundred thirty-eight".