31441642 has 4 divisors (see below), whose sum is σ = 47162466. Its totient is φ = 15720820.

The previous prime is 31441639. The next prime is 31441649. The reversal of 31441642 is 24614413.

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

It can be written as a sum of positive squares in only one way, i.e., 29800681 + 1640961 = 5459^2 + 1281^2 .

It is not an unprimeable number, because it can be changed into a prime (31441649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7860409 + ... + 7860412.

Almost surely, 2^31441642 is an apocalyptic number.

31441642 is a deficient number, since it is larger than the sum of its proper divisors (15720824).

31441642 is a wasteful number, since it uses less digits than its factorization.

31441642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15720823.

The product of its digits is 2304, while the sum is 25.

The square root of 31441642 is about 5607.2847261397. The cubic root of 31441642 is about 315.6228275118.

The spelling of 31441642 in words is "thirty-one million, four hundred forty-one thousand, six hundred forty-two".