151331402 has 4 divisors (see below), whose sum is σ = 226997106. Its totient is φ = 75665700.

The previous prime is 151331393. The next prime is 151331407. The reversal of 151331402 is 204133151.

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., 103042801 + 48288601 = 10151^2 + 6949^2 .

It is not an unprimeable number, because it can be changed into a prime (151331407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37832849 + ... + 37832852.

Almost surely, 2^151331402 is an apocalyptic number.

151331402 is a deficient number, since it is larger than the sum of its proper divisors (75665704).

151331402 is an equidigital number, since it uses as much as digits as its factorization.

151331402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75665703.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 151331402 is about 12301.6828930029. The cubic root of 151331402 is about 532.8966848809.

Adding to 151331402 its reverse (204133151), we get a palindrome (355464553).

The spelling of 151331402 in words is "one hundred fifty-one million, three hundred thirty-one thousand, four hundred two".