31020141402 has 32 divisors (see below), whose sum is σ = 68959512000. Its totient is φ = 10336167504.

The previous prime is 31020141367. The next prime is 31020141409. The reversal of 31020141402 is 20414102013.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31020141409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39328 + ... + 252164.

It is an arithmetic number, because the mean of its divisors is an integer number (2154984750).

Almost surely, 2^31020141402 is an apocalyptic number.

31020141402 is an abundant number, since it is smaller than the sum of its proper divisors (37939370598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31020141402 is a wasteful number, since it uses less digits than its factorization.

31020141402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215547 (or 215541 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 31020141402 its reverse (20414102013), we get a palindrome (51434243415).

The spelling of 31020141402 in words is "thirty-one billion, twenty million, one hundred forty-one thousand, four hundred two".