31030142 has 16 divisors (see below), whose sum is σ = 54682992. Its totient is φ = 13019520.

The previous prime is 31030127. The next prime is 31030157. The reversal of 31030142 is 24103013.

It is an interprime number because it is at equal distance from previous prime (31030127) and next prime (31030157).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53963 + ... + 54534.

It is an arithmetic number, because the mean of its divisors is an integer number (3417687).

Almost surely, 2^31030142 is an apocalyptic number.

31030142 is a deficient number, since it is larger than the sum of its proper divisors (23652850).

31030142 is a wasteful number, since it uses less digits than its factorization.

31030142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108523.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 31030142 is about 5570.4705366782. The cubic root of 31030142 is about 314.2398467695.

Adding to 31030142 its reverse (24103013), we get a palindrome (55133155).

The spelling of 31030142 in words is "thirty-one million, thirty thousand, one hundred forty-two".