402031015252 has 6 divisors (see below), whose sum is σ = 703554276698. Its totient is φ = 201015507624.

The previous prime is 402031015231. The next prime is 402031015259. The reversal of 402031015252 is 252510130204.

It can be written as a sum of positive squares in only one way, i.e., 251428033476 + 150602981776 = 501426^2 + 388076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402031015259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50253876903 + ... + 50253876910.

Almost surely, 2^402031015252 is an apocalyptic number.

It is an amenable number.

402031015252 is a deficient number, since it is larger than the sum of its proper divisors (301523261446).

402031015252 is a wasteful number, since it uses less digits than its factorization.

402031015252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100507753817 (or 100507753815 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 402031015252 its reverse (252510130204), we get a palindrome (654541145456).

The spelling of 402031015252 in words is "four hundred two billion, thirty-one million, fifteen thousand, two hundred fifty-two".