31401214042402 has 4 divisors (see below), whose sum is σ = 47101821063606. Its totient is φ = 15700607021200.

The previous prime is 31401214042313. The next prime is 31401214042417. The reversal of 31401214042402 is 20424041210413.

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., 30412897714521 + 988316327881 = 5514789^2 + 994141^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7850303510599 + ... + 7850303510602.

Almost surely, 2^{31401214042402} is an apocalyptic number.

31401214042402 is a deficient number, since it is larger than the sum of its proper divisors (15700607021204).

31401214042402 is a wasteful number, since it uses less digits than its factorization.

31401214042402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15700607021203.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 31401214042402 its reverse (20424041210413), we get a palindrome (51825255252815).

The spelling of 31401214042402 in words is "thirty-one trillion, four hundred one billion, two hundred fourteen million, forty-two thousand, four hundred two".