31004131442 has 4 divisors (see below), whose sum is σ = 46506197166. Its totient is φ = 15502065720.

The previous prime is 31004131423. The next prime is 31004131471. The reversal of 31004131442 is 24413140013.

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., 30916540561 + 87590881 = 175831^2 + 9359^2 .

It is a super-2 number, since 2×31004131442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7751032859 + ... + 7751032862.

Almost surely, 2^31004131442 is an apocalyptic number.

31004131442 is a deficient number, since it is larger than the sum of its proper divisors (15502065724).

31004131442 is a wasteful number, since it uses less digits than its factorization.

31004131442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15502065723.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31004131442 its reverse (24413140013), we get a palindrome (55417271455).

The spelling of 31004131442 in words is "thirty-one billion, four million, one hundred thirty-one thousand, four hundred forty-two".