31413142 has 4 divisors (see below), whose sum is σ = 47119716. Its totient is φ = 15706570.

The previous prime is 31413139. The next prime is 31413143. The reversal of 31413142 is 24131413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24131413 = 59 ⋅409007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31413143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7853284 + ... + 7853287.

It is an arithmetic number, because the mean of its divisors is an integer number (11779929).

Almost surely, 2^31413142 is an apocalyptic number.

31413142 is a deficient number, since it is larger than the sum of its proper divisors (15706574).

31413142 is a wasteful number, since it uses less digits than its factorization.

31413142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15706573.

The product of its digits is 288, while the sum is 19.

The square root of 31413142 is about 5604.7428130111. The cubic root of 31413142 is about 315.5274341706.

Adding to 31413142 its reverse (24131413), we get a palindrome (55544555).

It can be divided in two parts, 314 and 13142, that added together give a square (13456 = 116²).

The spelling of 31413142 in words is "thirty-one million, four hundred thirteen thousand, one hundred forty-two".