31340201402 has 4 divisors (see below), whose sum is σ = 47010302106. Its totient is φ = 15670100700.

The previous prime is 31340201401. The next prime is 31340201423. The reversal of 31340201402 is 20410204313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20410204313 = 149 ⋅136981237.

It can be written as a sum of positive squares in only one way, i.e., 23734791721 + 7605409681 = 154061^2 + 87209^2 .

It is not an unprimeable number, because it can be changed into a prime (31340201401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7835050349 + ... + 7835050352.

Almost surely, 2^31340201402 is an apocalyptic number.

31340201402 is a deficient number, since it is larger than the sum of its proper divisors (15670100704).

31340201402 is a wasteful number, since it uses less digits than its factorization.

31340201402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15670100703.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31340201402 its reverse (20410204313), we get a palindrome (51750405715).

The spelling of 31340201402 in words is "thirty-one billion, three hundred forty million, two hundred one thousand, four hundred two".