31030254402142 has 4 divisors (see below), whose sum is σ = 46545381603216. Its totient is φ = 15515127201070.

The previous prime is 31030254402083. The next prime is 31030254402233. The reversal of 31030254402142 is 24120445203013.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7757563600534 + ... + 7757563600537.

It is an arithmetic number, because the mean of its divisors is an integer number (11636345400804).

Almost surely, 2^{31030254402142} is an apocalyptic number.

31030254402142 is a deficient number, since it is larger than the sum of its proper divisors (15515127201074).

31030254402142 is a wasteful number, since it uses less digits than its factorization.

31030254402142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15515127201073.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 31030254402142 its reverse (24120445203013), we get a palindrome (55150699605155).

The spelling of 31030254402142 in words is "thirty-one trillion, thirty billion, two hundred fifty-four million, four hundred two thousand, one hundred forty-two".